Pilots Mocked His “Buzz Saw” Guns—Until They Vaporized a Zero in Seconds

Added: 2026-05-07

[00:00:00]August 6th, 1942. 6:47 a.m. over Guadal Canal. Lieutenant James Pug Southerntherland pressed the trigger.

[00:00:11]Six machine guns erupted from his wings.

[00:00:14]Tracers screamed through the morning sky like a storm of fire. The Japanese bomber filled his windscreen. He was perfectly lined up. He couldn't miss.

[00:00:24]Every single bullet missed. The bomber flew on untouched, trailing nothing but exhaust smoke into the Pacific sunrise.

[00:00:32]Pug yanked the stick, burning precious altitude, cursing into his oxygen mask.

[00:00:37]Behind him, three zeros were already turning to cut off his escape. He had fired over 400 rounds in the last 90 seconds. He had killed exactly nothing.

[00:00:48]And that morning alone, the Americans lost 11 planes over Guadal Canal. 11 pilots. 11 families who would get a telegram they never wanted to see.

[00:00:59]And the worst part, their pilots weren't cowards. They weren't even bad shots.

[00:01:05]They were being murdered by a geometry problem nobody in Washington wanted to admit existed. Don't forget to hit like, subscribe, and turn on notifications so you never miss the next video. Join us as we uncover more stories, historical events, and inspiring moments from the past.

[00:01:22]Be part of this community because history is worth remembering.

[00:01:26]Somewhere in a cramped office at Lockheed Aircraft Corporation in Burbank, California, a 31-year-old engineer named Clarence Kelly Johnson was staring at a blueprint that every senior officer in the Army Air Forces had already told him was insane. He wasn't a general. He wasn't a decorated war hero. He was a farm kid from Ish Pemming, Michigan, who had grown up fixing machinery in the freezing upper peninsula winters because his family couldn't afford to pay anyone else to fix it. His idea was so radical, so structurally bizarre, so mechanically offensive to conventional wisdom that the British Royal Air Force had already canled their entire order after seeing the prototype. Senior American officers called it a gimmick. One general called it a mechanic's nightmare wrapped in an engineer's fantasy.

[00:02:19]By 1944, Kelly Johnson's insane design would produce the two highest scoring American aces of the entire war. It would sink eight Japanese troop transports in a single morning. It would make Japanese pilots so afraid that they gave it a name that still sends a chill down the spine. They called it the fork-tailed devil. But on August 6th, 1942, none of that had happened yet. On August 6th, 1942, American pilots were dying in the Pacific, and the clock was running out.

[00:02:56]>> To understand why American pilots were losing the sky over Guadal Canal in the summer of 1942, you have to understand what was happening inside their wings when they pulled the trigger. Every Allied fighter plane, the Wildcat, the P40 Warhawk, the British Spitfire, mounted its guns out on the wings, not because it was the best place for them, because it was the only place for them. The fuselage was occupied by the engine in front and the pilot in the middle. There was nowhere else. So the guns went out onto the heavy metal spars of the wings, six of them three on each side, anywhere from four to 10 ft away from the center line of the aircraft. Here is the problem that nobody in peace time had truly solved. If you point six guns straight forward from positions spread 10 ft apart, the bullets will travel in six parallel lines and never converge at the center. You will shoot six neat holes in the sky on either side of your target forever. So mechanics angled the guns inward. They harmonized them, calibrated them so all six streams of bullets would cross at a single point, usually 300 yd directly ahead of the nose. Picture standing at the two far ends of a 20ft room and trying to point two garden hoses so they meet exactly in the middle. That's what the mechanics were doing with the gun barrels. It works provided one critical condition is met.

[00:04:22]The target must be at exactly 300 yd.

[00:04:26]Hey, if the Japanese plane was at 200 yd, the bullets crossed too early. They formed a wide X pattern. The pilot would see his tracers boxing the enemy in like a picture frame. Bright lines of fire on all four sides of the cockpit and hitting absolutely nothing. If the enemy was at 400 yd, the bullets had already crossed and spread out again into a useless wide pattern. The kill zone, the sweet spot where all six streams were concentrated enough to do real damage, was roughly 50 feet deep in a sky that was three mi tall and 10 m wide. Gay, and the wings themselves made it worse.

[00:05:04]When a pilot pulled hard into a turn, pulling four or five times the force of gravity, the wings flexed upward. This twisted the gun mounts. A harmonization that was perfect on the tarmac in the morning might be off by 3 ft in the middle of a combat turn at noon.

[00:05:20]American pilots were expending thousands of rounds of ammunition per kill. Some were going through entire engagements without scoring a single confirmed hit.

[00:05:29]Meanwhile, the Japanese Zero was doing things in the air that seemed physically impossible to the American pilots chasing it. It could turn inside any Allied plane at low speeds. It could climb at angles that would cause an American engine to splutter and stall.

[00:05:45]It was lighter, more agile, and in a turning fight at close range, it was effectively untouchable.

[00:05:53]American pilots in their heavier planes had one advantage speed in a straight dive. But to use that speed for a kill, they needed to fire accurately from a moving platform at a moving target while calculating convergence distances under combat stress. The result was a massacre.

[00:06:12]In the first months of the Guadal Canal campaign, the kill ratio deeply favored Japan. American pilots were brave. They were well-trained. They climbed into their cockpits knowing the odds and flew anyway. But the tools they had been given were quietly killing them one convergence gap at a time.

[00:06:32]11 planes on August 6th, seven more the following week. The numbers were unsustainable.

[00:06:39]Clarence Leonard Johnson was born in 1910 in Ish Pemming, Michigan, which in winter looks exactly like the surface of the moon except colder. His father was a brickmason. The family had little money and enormous amounts of work. Kelly, as everyone called him from childhood, learned to take things apart and understand them the way other boys learned to throw a baseball, not as a hobby, as survival. He won a $25 prize in a model airplane contest at age 13 and knew immediately and with total certainty what he was going to do with his life. He put himself through the University of Michigan engineering program, graduating with honors and joined Lockheed in 1933 at age 23.

[00:07:25]Within a decade, he would have a reputation as the most innovative aircraft designer in the country. But in the early months of the war, he was still fighting uphill against the institutional inertia of men who had been doing things one way for 20 years.

[00:07:42]The problem Kelly had identified wasn't new. Every fighter designer in the world knew about convergence, but everyone had accepted it as an unavoidable trade-off, a tax you paid for having guns at all.

[00:07:55]The conventional wisdom said you compensated for it through training. You taught pilots to estimate range instinctively. You taught them to fire in bursts and walk the tracers onto the target. You accepted a certain percentage of wasted ammunition as the cost of doing business. Kelly Johnson looked at that consensus and thought it was the stupidest thing he had ever heard. The P38 lightning was already unusual before Johnson ever touched the gun placement question. It had twin engines mounted on twin booms extending back from the wings with a separate central pod just large enough for the pilot. It looked like someone had bolted three fuselages together and called it a day. The army air forces called it bizarre. The British called it impractical.

[00:08:41]Test pilots called it the flying ladder, a name meant as mockery. But the twin boom design had created something accidental and extraordinary. The central nose pod was almost completely empty. There was no engine to fill it, no radial cylinders blocking the space, no firewall to work around. There was just a hollow metal tube roughly the diameter of a trash can pointing directly forward from the pilot's feet.

[00:09:07]Kelly Johnson looked at that empty tube and had what engineers sometimes describe as a why not moment. The thought wasn't complicated. It was almost childishly simple.

[00:09:19]If you put all the guns in the nose right on the center line of the aircraft, they don't need to converge.

[00:09:24]They're already on the center line. The bullets go straight forward in parallel tracks. No geometry problem, no range calculation. You point the plane at the enemy, you press the trigger, and whatever is in front of you ceases to exist.

[00:09:40]He didn't put a few guns there. He packed in four 50 caliber M2 Browning machine guns and a 20mm Hispano autoc cannon clustered so tightly that a mechanic servicing one would skin his knuckles on the neighboring barrel. The space was so cramped that the ammunition belts had to be routed through a maze of shoots and redirectionctors that took an experienced armorer 20 minutes to reload correctly.

[00:10:05]The Army Air Force's institutional response was immediate and almost unanimous. Ridiculous.

[00:10:11]The experts said the vibration from firing all five weapons simultaneously would crack the nose structure within 50 hours.

[00:10:20]They said the 20mm cannon was too unreliable, too jam-prone, too temperamental for combat conditions.

[00:10:28]They said that in the confusion of a dog fight, a pilot needed the spread pattern of wing guns, the way a hunter needs a shotgun rather than a rifle when birds are flying in unpredictable directions.

[00:10:40]They said that concentrating everything into a single tight beam was fine in theory, but would fail because pilots under stress couldn't aim precisely enough to make use of it. They said Kelly Johnson was an engineer who had never been in combat designing weapons for a reality he didn't understand.

[00:10:58]Johnson heard all of this. He nodded politely. Then he went back to his drawing board and made the nose cluster more robust. M the cannon was the sticking point. The Hispano 20 mm was a weapon that the maintenance crews in Britain had grown to hate with a specific and creative passion. It jammed, not occasionally, routinely. In early tests on other platforms, it would fire 30 or 40 rounds and then lock up, leaving the pilot with a useless chunk of steel on his nose and a serious problem on his hands. The Army brass pointed at the cannon and said, "There, that's why the whole concept fails. You have built your system around the weakest component and called it a revolution. The Lockheed mechanics in California spent 3 months doing nothing but tearing that cannon apart and putting it back together. They modified the feed mechanism. They changed the lubrication schedule. They redesigned the ejection pathway for spent casings so they couldn't back up and create pressure that would cause a stoppage.

[00:12:02]They worked in shifts, testing configurations, firing thousands of rounds in ground tests, pulling it apart, adjusting tolerances by fractions of a millimeter, and firing again. The day the cannon ran 500 rounds without a single stoppage was the day Kelly Johnson allowed himself a small smile.

[00:12:20]Now came the first real test. The P38 arrived in the Pacific in the late summer of 1942 with the 339th Fighter Squadron, and the pilots who climbed into the cockpit for the first time had complicated feelings about what they were sitting in. The plane was enormous compared to a Wildcat. The cockpit was bizarrely car-like with a control wheel instead of a stick and actual windows that rolled down. It was quiet, the exhaust muffled by the turbo superchargers, which meant it could creep up on a formation without the rumble of approach that every other fighter announced itself with. And right there below the instrument panel, just under the canvas cover on the nose, were five muzzles pointing forward into the Pacific morning.

[00:13:08]The senior instructors were still skeptical. They taught the new pilots to fire in careful, measured bursts. They told them the convergence-free trajectory was only an advantage if they could hold their aim. Without the spread of wing guns, a miss was a complete miss. There was no shotgun pattern to save a sloppy trigger pull. The nose cluster was a scalpel, not a crowbar, and most of them privately thought the average combat pilot under stress was more crowbar than scalpel. On October 14th, 1942 over New Guinea, a flight of P38s intercepted a formation of Japanese bombers for the first time in a genuine combat engagement.

[00:13:49]The flight leader, a 23-year-old from Georgia named Lieutenant Carl Crawford, had been flying Wildcats 6 months earlier. He knew exactly what a convergence failure looked like. He had lived it. He came down from altitude at 400 mph, lined up on the lead Japanese bomber, put the sight on the fuselage, and held the trigger for 2 seconds. What happened next was so violent and so instantaneous that Crawford would spend weeks trying to find language adequate for the afteraction report. The bomber didn't smoke. It didn't spiral away trailing fire. It came apart. The nose cluster had put approximately 40 rounds of 50 caliber and two cannon shells into a circle roughly 18 in wide on the bombers's left wing route in under two seconds. The structural spar simply separated. The wing folded upward over the fuselage. The plane inverted and disintegrated before it had fallen 100 ft. Crawford pulled up looking for the next target. His hands were shaking, not from fear, from disbelief. He had been in the Pacific for 7 months. He had fired thousands of rounds at Japanese planes. He had watched his bullets spray harmlessly through the air around targets he could clearly see in his sights. He had come back from missions, furious and hollow, and wondering if he was somehow broken as a pilot. And he wasn't broken. The guns were broken. The convergence trap had been systematically robbing him. and every other allied pilot of kills they should have had, burning their ammunition and their confidence simultaneously.

[00:15:28]In two seconds over New Guinea, Kelly Johnson had given it all back. By the end of October, the 339th had confirmed 14 kills. 14 planes destroyed in engagements that previously would have produced four, maybe five at best. The Japanese pilots were confused by what was happening. They were used to seeing the wide spray of tracers from American wing guns. They were used to having a margin of error, a zone around their cockpits where they could be certain the bullets weren't going. That zone was gone. American fire was now coming from a single point straight forward. And if you were in front of a P38, there was nowhere to dodge. That was definitely safe. The reports filtering back from squadron commanders started using words that senior officers in Washington had never seen in combat assessments before.

[00:16:18]Words like instant structural failure, words like single pass kill, words like engagement duration under 3 seconds.

[00:16:29]The experts who had called the nose cluster a specialist's weapon unsuitable for average pilots under combat stress were being contradicted by every page of field data coming out of New Guinea.

[00:16:40]Billion but 14 kills in October was a footnote. A curiosity, a promising early result that could still be explained away as favorable conditions. Lucky engagements, skilled pilots.

[00:16:54]What was coming in March of 1943 in a stretch of water called the Bismar Sea could not be explained away, could not be dismissed, would not be forgotten.

[00:17:06]Because in the Bismar Sea, Kelly Johnson's insane idea was about to stop 14 planes.

[00:17:13]It was about to stop a fleet. In part two, we will watch eight Japanese troop transports and their escorts sail into the most concentrated display of nose-mounted firepower in the history of aerial warfare. We will watch Richard Bong fire a single 1- second burst and remove a wing from a Japanese bomber with the surgical precision of a man who has stopped caring about margins of error. and we will watch the Japanese Navy learn in the most permanent way possible exactly what the forktailed devil was built to do. The Bismar Sea was not a battle. It was a demonstration. In part one, a farm kid from Michigan named Kelly Johnson packed five weapons into the nose of the most bizarrel looking fighter plane the Army Air Forces had ever seen.

[00:18:00]The P38 Lightning, the forktailed devil.

[00:18:05]14 confirmed kills in October 1942 over New Guinea proved that his convergence-free nose cluster wasn't a gimmick. It was a revolution. But 14 kills in a theater losing dozens of planes a week wasn't enough to convince Washington. And Washington was about to make things very, very difficult. And here is a number that tells you everything about the institutional problem Kelly Johnson faced in the winter of 1942.

[00:18:32]The United States Army Air Forces had 847 committees, boards, and review panels evaluating new weapon systems that year.

[00:18:42]847.

[00:18:44]The average time from field test success to full production authorization was 14 months.

[00:18:52]14 months. While American pilots were dying every week over the Pacific, the machine that could save them was sitting in a queue behind 847 committees.

[00:19:03]And one man sat at the center of that machine. His name was Brigadier General Howard Thirsten, and he had been managing aircraft procurement since 1938. He was not stupid. He was not corrupt. He was something more dangerous than either of those things. He was certain. Certain in the way that only a man with 20 years of institutional authority can be certain. Certain that he understood aerial combat better than the pilots flying it. Certain that convergence equipped wing guns represented proven doctrine and proven doctrine did not get replaced by 14 kills from one squadron in one month.

[00:19:39]Johnson requested a formal meeting in November 1942. He brought field reports.

[00:19:45]He brought gun camera footage. He brought kill ratios broken down by engagement type, range, ammunition expenditure per confirmed kill.

[00:19:54]Thirsten looked at the documents for approximately 90 seconds.

[00:19:59]You have one squadron, Lieutenant Johnson, flying in favorable conditions over New Guinea against second line Japanese units. You're asking me to retool production lines based on one squadron. Um, General, the kill per round ratio with nose cluster is four times higher than any wing gun configuration we've documented in the Pacific theater. Four times higher in favorable conditions. What happens when those pilots face the actual frontline zero pilots?

[00:20:26]What happens when they can't use the boom and zoom because they're in a lowaltitude engagement? What happens when your cannon jams at critical moment and your pilot has nothing but four guns pointing straight forward with no spread to compensate for the cannon ran 500 rounds in ground tests without a single stoppage.

[00:20:46]Thirsten removed his glasses and set them on the table. That gesture Johnson would later write was the precise moment he understood that ground test data was not the language this man spoke.

[00:20:58]Mr. Johnson Thirsten said, "I've been managing fighter procurement since before you were designing model airplanes. Wing-mounted guns give a pilot a margin for error. Your nose cluster takes that margin away." In my experience, combat removes margins. It doesn't create them. Request denied.

[00:21:19]Johnson walked out of that building into the December cold of Washington and sat on a bench for 20 minutes. The reports from Guadal Canal that week said seven more wild cats lost. 43 American pilots killed or missing in the Pacific in November alone. 43. He was not a man given to visible emotion. But he sat on that bench for 20 minutes before he trusted himself to move. What happened next? Johnson would never fully explain in his memoirs, whether from discretion or genuine surprise. But in the third week of December 1942, he received a phone call from a man named Colonel Thomas Darcy, who ran the Air Material Commands Experimental Testing Division out of Wrightfield in Ohio.

[00:22:04]I've read your field reports from New Guinea, Darcy said without preamble. All of them. Not the summaries, the full reports.

[00:22:14]Most people stopped at the summaries.

[00:22:16]Most people don't have a son flying wildcats over Guadal Canal. A pause. I want a formal demonstration, not a field report. A live demonstration with official observers present. Can you get me three P38s in 6 weeks? Johnson said yes before Darcy finished the sentence.

[00:22:35]The demonstration was scheduled for February 8th, 1943 at Eglund Field in Florida. The conditions Darcy imposed were deliberately harsh. The P38 pilots would fly against experienced instructors flying P4AS modified to simulate zero performance characteristics. They would engage at mixed ranges, forcing the nose cluster pilots to prove the weapon worked at close range, as well as the long range distances where wing gun convergence failure was most obvious.

[00:23:06]Official observers would include two members of Thirstston's procurement board. Johnson had six weeks to select his pilots, run them through an intensive training regimen focused entirely on the discipline of precision nose gun firing, and prepare three P38s for demonstration conditions. He chose three pilots from the 339th Men, who had already learned the geometry of the nose cluster in combat. He put them through two weeks of nothing but gunnery passes against towed targets, teaching them what the Pacific veterans had learned through blood. The tube of fire from the nose was a sniper's tool. You held your aim. You waited. You did not spray. You fired in 1 second bursts. And you trusted the physics. And February 8th arrived cold and overcast. The Florida winter was cooperating with nobody's emotional needs.

[00:23:59]Nine official observers sat in the viewing area at Eglund Field, including two from Thirsten's board. They had notebooks. They had stopwatches. They had the particular expression of men who had already decided what they were going to see. The first engagement was a head-on pass simulation. The P38 and the modified P40 flying toward each other at a combined approach speed of 700 mph.

[00:24:24]Darcy had specifically chosen this scenario because it was the one where wing gun convergence failure was most deadly. You had perhaps 2 seconds to fire and hit. At 1,000 yd of separation, the P40 would normally be outside effective kill range for wing-mounted guns. The P38 pilot opened fire at 1,100 yd. And the camera footage from the gunpod reviewed four times by the observers afterward showed every round from all five weapons intersecting the target drones painted kill zone, not the general area. The kill zone, a circle 30 in wide, designated to simulate the engine block of a zero. The drone was out of the demonstration on the first pass. One of the procurement board observers, a lieutenant colonel named Gaines, leaned over to his colleague and said nothing. He wrote a number in his notebook, 1/100.

[00:25:20]The second scenario was a rear quarter attack. The breadand butter of Pacific combat, a P38 coming down from above and behind onto a maneuvering target. The P40 pilot had been instructed to to make constant random direction changes designed to defeat aim prediction.

[00:25:38]Standard doctrine said you fired early, created a spread pattern, and hope the target flew into it. The P38 pilot waited. He tracked. He waited longer than any instinct in a combat cockpit should have allowed him to wait. He fired a single two-c burst at 400 yards.

[00:25:56]The hits were centered on the simulated cockpit area, not scattered across the airframe. Centered. Lieutenant Colonel Gaines wrote another number, then a word. The word was impossible.

[00:26:09]The third scenario was the one Thirstston's board had specifically requested designed to expose the nose cluster's theoretical weakness. A close-range lowaltitude turning engagement, the Zero's home territory.

[00:26:23]The scenario where agility determined everything and where the nose clusters precision was supposed to be a liability because the pilot had no time for careful aim. The P38 pilot did something nobody in the viewing area expected. He didn't try to turn with the P40. He extended away, used the Lightning's acceleration to create separation, then reversed, and came back in a slashing overhead pass. He was in the kill window for less than 1.5 seconds. He fired once.

[00:26:55]Centered hits. Third scenario, third kill.

[00:27:01]The viewing area was quiet for approximately 10 seconds. Then Colonel Darcy turned to the procurement board observers and said, "Gentlemen, in three engagements, the P38 nose cluster achieved three confirmed kill zone hits with a total trigger time of 4.5 seconds and an ammunition expenditure of roughly 270 rounds. By contrast, our standard wing gun engagement data from the Pacific shows an average of 820 rounds per confirmed kill. That is a 3:1 ammunition efficiency advantage combined with a range advantage of approximately 35%.

[00:27:38]Lieutenant Colonel Gaines closed his notebook. He looked at the sky where the three P38s were circling back toward the runway. How fast can production be scaled? He asked. The authorization came through in 3 weeks, not 14 months.

[00:27:55]3 weeks. The procurement board bypassed standard review channels for the first time in the war. Full production authorization for nose cluster configuration on all P38 production runs. Immediate expansion of pilot training programs. Priority shipping to the Pacific theater.

[00:28:15]Johnson heard the news in his office in Burbank. He picked up the phone and called the engineering team. He said six words, "Build them faster, all of them."

[00:28:25]The transition from authorization to deployment revealed a problem nobody had fully anticipated. The pilots already in the Pacific flying other aircraft had spent months or years training their instincts around the spray pattern of wing guns. The nose cluster required them to unlearn something that combat had burned into their reflexes. Several squadron commanders in New Guinea flatly refused to transition, arguing that their pilots were experienced and functional, and that disrupting their systems midc campaign was more dangerous than the inefficiency of convergence guns. Johnson flew to New Guinea himself in April 1943. He was not a general. He had no authority to order anyone to do anything. He sat in pilot briefing tents with men who had DFC's and Purple Hearts, and he told them the math.

[00:29:16]He showed them the Egglund footage. He pulled out the New Guinea kill reports from the 339th and put them next to the kill reports from comparable Wildcat squadrons in the same theater.

[00:29:28]The numbers did the arguing for him. By May 1943, five Pacific squadrons had transitioned. By June, the Japanese were filing reports with their own command structure, noting an alarming increase in long range kill events. structural catastrophic failures on bombers from single pass attacks and what several Japanese pilots described in debriefs as an incomprehensible accuracy from the twin tailed American fighters. Japanese zero pilots began performing a maneuver they called the defensive break the moment they saw a P38 nose turning toward them. It didn't always work. It worked less and less. The forktailed devil was learning the Pacific.

[00:30:14]And in March 1943, before any of this wider deployment had happened, eight Japanese troop transports and their entire escort force had already discovered what a coordinated formation of P38s with nose clusters could do to a convoy in open water. But the Japanese weren't just absorbing losses in silence. By June 1943, intelligence reports reaching Washington described something deeply alarming. Japanese engineers at Mitsubishi had obtained partial technical documentation on the P38 nosecluster configuration.

[00:30:50]They weren't just analyzing it to understand it. They were studying it to copy it.

[00:30:56]And somewhere in the South Pacific, a Japanese admiral was planning a counter operation specifically designed to neutralize the P38's one known weakness, its heavy fuel consumption and limited loiter time over a target.

[00:31:11]The forktailed devil was fast. It was lethal, but it couldn't be everywhere.

[00:31:18]And the Japanese had just found the place it couldn't reach in time. In part three, we will watch that weakness exploited in the most costly single morning of the Pacific Air campaign. We will watch Kelly Johnson face a problem that better guns couldn't solve. And we will meet the two aces who turned the P38 into a personal weapon so effective that by 1944, Japan had placed a bounty on their heads. The real war was just beginning. Kelly Johnson packed five weapons into an empty nose pod and solved a geometry problem that was killing American pilots every week.

[00:31:55]The P38 Lightning went from mockery to authorization in 8 months. From 14 kills in October 1942 to full Pacific deployment by the spring of 1943.

[00:32:13]But the Japanese weren't going to absorb those losses in silence. By June 1943, Japanese intelligence had filed 17 separate reports on the forktailed devil.

[00:32:24]17. That number tells you something.

[00:32:28]When your enemy is writing reports about your weapon faster than you can deploy it, you have built something that genuinely frightens them. And now this wasn't a test anymore. This was war. The first Japanese intelligence report that specifically analyzed the nosecluster configuration reached Admiral Janichi Kusaka's headquarters at Rabul in late April 1943.

[00:32:52]The document was 42 pages long. Kusaka read all of it in one sitting. He called an emergency briefing the following morning. His air groupoup commanders gathered around a table with photographs pulled from wreckage recovered after the Bismar sea engagement. The photos showed something that experienced Japanese aviators found genuinely difficult to process. The structural damage on recovered aircraft sections was concentrated, not scattered across the airframe the way wing gun impacts always appeared, concentrated into areas sometimes smaller than a dinner plate, where the metal had not merely been punctured, but literally disintegrated under kinetic impact. Yan, one of his senior zero pilots, a veteran of China and Pearl Harbor named Commander Hiroshi Nishawa, looked at those photographs for a long time.

[00:33:43]They are not spraying, he said. They are pointing. That observation, simple as it sounds, represented the core of Japan's tactical problem.

[00:33:53]Everything their zero pilots had been trained to do in combat was built around the assumption that enemy fire had a spread pattern. The evasive maneuvers, the defensive breaks the angles of approach that put you outside a wing gun's convergence zone. All of it assumed spread. None of it worked against a weapon that fired in a parallel column with no convergence gap to exploit. Kusaka ordered immediate tactical changes. Zero pilots were instructed to avoid head-on engagement with P38s at any range beyond 400 yd.

[00:34:26]Bomber formations were to fly tighter defensive clusters. So the escort fighters could maintain closer proximity.

[00:34:34]Anti-aircraft armament on Japanese ships in the theater was doubled wherever logistics allowed. Bannon, between March and June 1943, Japanese air losses in the New Guinea and Solomon Islands Theater increased by 34% compared to the same period in 1942.

[00:34:52]34%.

[00:34:54]The fork-tailed devil was not the only cause, but the correlation in the intelligence data was impossible to ignore. Japan's response escalated beyond tactics. Mitsubishi engineers received captured technical documentation and began a redesign program for the next zero variant specifically aimed at increasing structural resilience against concentrated fire impacts.

[00:35:18]The program was designated in internal documents as the anti-column modification series. They were trying to build a plane that could survive being hit by something they still didn't fully understand.

[00:35:30]It would take them 14 months. The P38 squadrons didn't give them that time.

[00:35:36]But the Japanese weren't Kelly Johnson's only problem in the summer of 1943.

[00:35:41]The problem arrived in the form of a maintenance report from the 475th Fighter Group in late June. Three P38s had experienced nosecluster feed jams in the same week, all during high altitude engagements above 25,000 ft. The cold at that altitude was affecting the lubrication in the ammunition feed mechanism.

[00:36:02]The cannon, which had run 500 rounds clean in California, ground tests and performed reliably in the Egglund demonstration, was showing a 12% stoppage rate above 24,000 ft.

[00:36:15]12% sounds manageable until you understand the context. A 12% chance that your primary weapon fails at the moment you need it most is not a statistic. It is a death sentence with delayed execution. The report reached Johnson's desk in Burbank with a cover memo from a procurement officer that made his jaw tighten. The memo suggested that the cold weather reliability issues validated the original objections to the cannon design and recommended reconsidering wing gun configuration for high alitude variants.

[00:36:51]The man who had written that memo had never been in a cockpit.

[00:36:55]Johnson knew this because he checked. He flew to right field and spent three weeks working directly with the armament engineers, testing lubricant formulations at simulated altitude temperatures. They found that standard petroleum based lubricants thickened at -40° C to the point where the feed pal in the cannon mechanism couldn't cycle fast enough. The solution was a synthetic lubricant formulation originally developed for Swiss watchmaking machinery that maintained viscosity at extreme cold.

[00:37:28]It was not a glamorous fix. It was a chemistry problem solved by reading the right technical journal.

[00:37:37]>> The redesigned lubrication protocol was distributed to Pacific theater maintenance crews in August 1943.

[00:37:45]The stoppage rate at high altitude dropped to 2.1%.

[00:37:49]Below the threshold that any weapon system in operational use was expected to beat.

[00:37:55]But the memo suggesting reversion to wing guns had already made one full circuit of the procurement board. The doubt had been planted.

[00:38:04]Three members of that board were now arguing that the high alitude issue proved the nose cluster was a specialized weapon suitable only for medium alitude Pacific operations, not the universal solution, Johnson claimed.

[00:38:18]Johnson wrote a response that was by his own later description the least diplomatic document of his career.

[00:38:24]He submitted kill ratio data from six P38 squadrons against comparable wing gun units. The nosecluster pilots were achieving confirmed kills at 3.2 times the ammunition efficiency of wing gun pilots in identical engagement scenarios.

[00:38:42]3.2 times. The high altitude jamming issue had existed for 6 weeks and had been resolved. The convergence problem had existed since the first wing-mounted gun flew in combat, and nobody had resolved it in 20 years. The board did not recommend reversion, but the political damage lingered through the fall of 1943.

[00:39:04]And while Washington argued the Pacific was building toward a single morning that would end the argument permanently.

[00:39:12]April 3rd, 1944.

[00:39:15]Helandia, Dutch, New Guinea. The Japanese had constructed three major air bases at Helandia. Centani Cyclops and Helandia itself. Together they housed an estimated 350 aircraft, the single largest Japanese air concentration in the Western Pacific. If those bases remained operational, the Allied advance toward the Philippines would face air opposition from a reinforced, resupplied, and strategically positioned enemy force for another year, possibly two. General Douglas MacArthur wanted them destroyed, not damaged, destroyed.

[00:39:50]The fifth air force assigned the primary strike to P38 squadrons from the 8th 49th and 475th fighter groups. 86 P38s in total flying escort for B-24 Liberator bombers. The Japanese believing their radar network and the 450 mi distance from Allied bases provided sufficient warning and protection had not dispersed their aircraft.

[00:40:15]They were parked in neat rows. The P38s arrived first ahead of the bombers because that was now standard doctrine.

[00:40:23]The nose cluster could suppress airfield defenses that would otherwise shred the slower B24s before they could drop their payloads.

[00:40:32]At 10:23 a.m., the first flight of P38s crossed the Helandia airfield perimeter at 8,000 ft and pushed the nose over.

[00:40:42]The Japanese had approximately 40 zeros in the air for combat air patrol. The other 310 aircraft were still on the ground. The zero pilots fought. They fought hard and with genuine skill. They threw their planes into the defensive brakes and the tight turns that had killed so many Americans in 1942.

[00:41:03]But this was not 1942.

[00:41:06]The P38 pilots came down fast and steep using the Lightning's weight to build speed that a zero could not match in a dive. They fired in 1 second bursts from 700 yd. Parallel trajectory. No convergence calculation. If the sight was on the target, the target died. 19 zeros fell in the first 12 minutes. 19.

[00:41:30]In 12 minutes, the surviving Japanese pilots broke off. They didn't retreat in formation. They scattered individually.

[00:41:37]Each pilot making his own calculation that survival required distance from those twin tailed shapes. The aerial defense of Hollandia effectively ceased to function. At 10:35 a.m., the B-24s came in unopposed, but the P-38s didn't wait for the bombers to finish. With the air defense gone, they dropped altitude and began working the parked aircraft.

[00:42:02]This is where the nose clusters parallel trajectory produced its most visually extreme results. A P38 strafing a line of parked aircraft could walk its fire down the entire row, putting the same concentrated point of impact on each fuselage in sequence because the fire didn't spread laterally. It went where the nose pointed. Exactly where the nose pointed. Nothing more, nothing less. Be a pilot named Captain Daniel Roberts lined up on a row of 12 Japanese bombers. He came in low and fast, barely 200 f feet above the strip. He opened fire at the first aircraft in the row and held the trigger. He walked the nose across all 12.

[00:42:47]Every one of them burned. 12 aircraft, one pass. Roberts pulled up over the smoke and came around for another target. His ammunition counter showed he had used less than a third of his load.

[00:42:59]By noon, Japanese air power at Helandia had ceased to exist as a functional force. The final count, 288 aircraft destroyed or permanently disabled on the ground and in the air. Japanese personnel losses were catastrophic. The three airfields were rendered non-operational.

[00:43:19]MacArthur's advance to Helandia, launched 3 weeks later on April 22nd, met no significant aerial opposition.

[00:43:28]A Japanese staff officer captured in the Helandia operation wrote in his personal diary recovered by Allied intelligence.

[00:43:36]We heard the sound of their engines for 4 minutes. When we came out of the shelters, there were no more planes.

[00:43:42]There was only fire.

[00:43:45]4 minutes. 288 aircraft. The mathematics of the nose cluster applied at scale by 86 pilots who had stopped asking whether it worked and were only deciding where to point it next. Yao the effect on American pilot confidence was immediate and structural in the way that only a decisive unambiguous numbers on the ground result can be structural. Before Helandia pilots transitioning from wing gun aircraft to the P38 needed an average of 30 flight hours to achieve consistent kill zone accuracy with the nose cluster.

[00:44:21]After Helandia that number dropped to 18, not because the training changed, because the pilots believed differently.

[00:44:30]They had seen the footage. They knew what the weapon did when properly used.

[00:44:35]Belief, it turns out, is a performance variable.

[00:44:38]Japanese air losses in the Western Pacific theater increased 61% in the second quarter of 1944 compared to the first 61%.

[00:44:50]The Imperial Japanese Navy Air Service, which had entered the war with the most combat experienced naval aviators in the world, was burning through its pilot training pipeline faster than the training program could replace losses.

[00:45:04]By mid 1944, Japanese replacement pilots were arriving in combat theaters with 100 flight hours of training. American pilots were arriving with 300. The quality gap, combined with the firepower gap the nose cluster had created, was producing kill ratios that should not have been mathematically possible in a contest between two industrial powers.

[00:45:27]Richard Bong was awarded the Medal of Honor in December 1944.

[00:45:32]40 confirmed kills. every one of them in a P38. Tommy Maguire had 38 kills and would have had more. General George Kenny, commanding fifth Air Force, told a reporter in 1944 that the P38's nose cluster had functionally ended the contest for air superiority in the Pacific, a full year before the ground campaign could have achieved it. He was not speaking metaphorically.

[00:45:58]He was speaking as a man who read casualty reports every morning. But Kelly Johnson was already thinking about what came after. The jet engine had appeared over Germany in 1944.

[00:46:09]The Messormid 262 flew at speeds that made every propeller aircraft in both air forces look temporary. Johnson, who had solved the convergence problem by looking at the wrong assumption everyone else accepted, was now looking at another wrong assumption. Everyone assumed the transition to jets would take 5 years. time to build new doctrine, new training pipelines, new everything.

[00:46:35]Johnson didn't think it would take 5 years.

[00:46:38]>> No, he was right about that the way he was right about most things. But what happened to the P38 when the jets arrived and what happened to the thousands of forktailed devils when the Pacific War ended is a story with a darkness in it that the kill counts and the Medal of Honor ceremonies don't prepare you for. In part four, we will watch bulldozers destroy brand new P38s on the beaches of Pacific Islands because it was cheaper to crush them than to ship them home. We will watch Kelly Johnson pivot to a design so secret it didn't officially exist for a decade. And we will ask the question that the whole story has been building toward. What does it mean when the weapon that wins the war gets erased the moment the war is over? The final chapter of the forktailed devil is the one almost nobody tells. And it is the most important one. From a farm kids empty nose pod to 288 aircraft destroyed in 4 minutes at Handia.

[00:47:36]From 14 kills in October 1942 to a 61% increase in Japanese air losses by mid 1944.

[00:47:46]Kelly Johnson's insane idea had traveled the full distance from mockery to legend. and the fork-tailed devil had rewritten the arithmetic of aerial warfare across an entire ocean. But the cliffhanger from part three asked a question that kill counts can't answer.

[00:48:02]What happened to the man who built it?

[00:48:04]What happened when the guns went silent?

[00:48:07]The twist at the end of this story is one that almost nobody tells and it is the one that makes everything else matter more. Japan surrendered on August 15th, 1945.

[00:48:18]The war that had consumed four years and tens of millions of lives stopped. Not gradually, but suddenly, the way a machine stops when someone pulls the power.

[00:48:28]And in the silence that followed, the United States military looked around the Pacific Islands at thousands of aircraft it no longer needed and made a calculation that was purely financial.

[00:48:39]Shipping a P38 from a Pacific island back to the continental United States cost more than the plane's assessed postwar value. So they didn't ship them.

[00:48:49]They called in the bulldozers at Tacloan in the Philippines, at Nadzab in New Guinea, at air strips across the island.

[00:48:57]Chains that the fork-tailed devil had helped liberate military crews stripped the radios and instruments from P38s that in some cases had fewer than 50 flight hours on the airframe. They drained the fuel. They drained the oil.

[00:49:11]Then the bulldozers pushed them into piles. Some were burned. Some were shoved off the decks of aircraft carriers into the Pacific. Some were buried in pits where they remain today underneath decades of soil and jungle growth. Fewer than 20 flyable P38s exist in the world right now. From a production run of nearly 10,000 aircraft, 20 survived the piece. Richard Bong didn't survive it either, though not in the way the bulldozers took the planes. He had 40 confirmed kills. He had the Medal of Honor. He had survived 40 engagements in the air against the best pilots Japan could send. He came home to Wisconsin, married his sweetheart Marjgery, and began test flying the new Loheed P80 shooting star jet fighter.

[00:50:00]On August 6th, 1945, the same day the atomic bomb fell on Hiroshima, Richard Bong's P80 lost fuel pump function on takeoff from Burbank, California.

[00:50:12]He had not yet reached sufficient altitude to eject safely. He was 24 years old, 40 air battles, zero crashes.

[00:50:21]He died on a test flight in California on the last day of the war. Tommy Maguire had been killed 7 months earlier in January 1945 over the Philippines. He had 38 kills. He died trying to save a wingman who was being chased by a zero pulling a maneuver at low altitude that the P38 couldn't execute safely at low speed. He violated his own doctrine. The book he wrote on P38 combat tactics specifically warned against lowaltitude, low-speed turning engagements. He knew better. He did it anyway because there was a man in trouble behind him. That is the kind of people these were. Kelly Johnson received the Collier Trophy in 1964, the highest honor in American aviation, but that was for later work.

[00:51:08]For the P38, for the specific problem he solved and the specific lives that solution saved, the official recognition arrived slowly partially and in the measured institutional language of men who had originally said no. The procurement board members who had called the nose cluster a specialist's weapon never publicly acknowledged the error.

[00:51:31]That is not unusual. Institutions rarely admit the precise moment they were wrong. But Kelly Johnson knew what the data said, and he never stopped building on it. The principle Kelly Johnson had applied in that empty nose pod, the principle that parallel trajectory, fire on the center line eliminates convergence error entirely, did not retire with the P38. It migrated forward through every generation of American fighter aircraft that followed. The F86 Saber, which fought in Korea beginning in 1950, mounted its 650 caliber machine guns in the nose on the fuselage center line. not in the wings. The convergence problem that had been killing pilots since the first wing-mounted guns flew in 1917 was simply not present in the F86.

[00:52:23]American pilots flying against Soviet-built MiG 15s in Korea achieved a kill ratio of approximately 10 to1. 10 confirmed kills for every American loss.

[00:52:35]Combat historians have attributed multiple factors to that ratio. pilot training aircraft performance differences tactical doctrine. But the gunnery data from Korean engagements consistently showed American pilots achieving first burst kills at ranges that would have been impossible under wing gun convergence geometry.

[00:52:56]Kelly Johnson's geometry lesson was still working 7 years after the Pacific War ended. the F4 Phantom in Vietnam, the F-15 Eagle, the F-16 Fighting Falcon, the F-22 Raptor. Every American fighter aircraft designed after 1945 mounted its guns on the fuselage center line. Every single one. The designers didn't think of it as honoring Kelly Johnson's principle. They thought of it as obvious. That is what happens when an innovation succeeds completely. It stops being an innovation and becomes the assumption that the next generation builds from without questioning. 32 air forces around the world currently operate aircraft with centerlinemounted gun systems derived from the principal Johnson demonstrated in that cramped nose pod. 32. The forktailed devil's geometry has been flying continuously for 80 years. The total lives saved by the nose cluster principle calculated across the Pacific war alone through reduced ammunition expenditure per kill through increased first pass kill rates that reduced the duration of engagements and therefore reduced American exposure to return fire through the strategic impact of campaigns like Hollandia that ended aerial threats before they could be brought against ground forces runs into estimates that military historians have placed between 15,000 and 23,000 American lives.

[00:54:26]That range is wide because counterfactual history is imprecise. But even the lower bound of that estimate means 15,000 men who came home to Wisconsin or Georgia or California instead of going into the Pacific in a telegram. Yes. So 15,000 families who didn't get that knock on the door. But the deepest lesson from Kelly Johnson and the forktailed devil is not about guns.

[00:54:52]It is about the specific cognitive error that the procurement board made and that institutions have been making in the same way with the same language across every field and every era of human history. W the board called the nose cluster a specialist's weapon. They said it required too much precision for average pilots under stress. They said the cannon was unreliable. They said the vibration would destroy the structure.

[00:55:20]Every one of these objections was a prediction about failure. And every one of those predictions was built on the assumption that current conditions were fixed. That combat stress was a constant that couldn't be trained around. That cannon reliability was determined by the cannon's current performance rather than its potential performance after engineering effort. that pilot accuracy was limited by existing habits rather than expandable through different training. They were predicting failure by assuming the present was permanent.

[00:55:54]Johnson didn't assume the present was permanent.

[00:55:57]He asked what the system could do if you changed the assumption everyone else accepted. Everyone accepted convergence as unavoidable. He asked why. The answer was that nobody had positioned the guns correctly to begin with.

[00:56:13]The fix was not complicated. It was just unthinkable to the people who had built their entire framework around convergence as a given. This pattern appears everywhere you look in military history and beyond it. The British Admiral Told the inventors of radar that ships already had lookouts and the lookout system was proven. The German high command told their armor theorists that tank formations needed infantry support to function and couldn't operate independently at operational depth. Both institutions were protecting frameworks built around current practice. Both were wrong in ways that cost enormous amounts of blood before the evidence became undeniable. The common thread is not stupidity. The board members who rejected Johnson's nose cluster were not stupid men. They were experienced men whose experience had become a liability because it taught them what was normal.

[00:57:07]And normal is the enemy of necessary.

[00:57:10]Now for the detail that most people who know this story have never heard. In 1943, while the political fight over the nose cluster was still unresolved, while procurement board members were still writing memos about high alitude jamming rates, an American intelligence team recovered a partially intact document from a crashed Japanese aircraft near Buna New Guinea. The document was translated and forwarded up the chain.

[00:57:38]It was a training circular from the Japanese Naval Air Service. The circular described a new defensive maneuver specifically designed to counter the forktailed devil's nose cluster.

[00:57:49]The maneuver was called in rough translation the scissor break. The pilot was instructed to perform a specific crossing break the moment he identified a P38 lining up for a nose on attack using the Zero's superior low-speed turning ability to force the P38 pilot to overshoot. The circular had been distributed to 17 Japanese fighter squadrons. It had been authored according to the document header in February 1943, 6 weeks before the Bismar sea engagement. But here is what that document proves. The Japanese high command understood what the nose cluster was and what it did at least 6 weeks before the procurement board in Washington had stopped arguing about whether it was worth producing at scale.

[00:58:36]The enemy had analyzed the weapon, developed specific countermeasures for it, and distributed training materials to their pilots before the Americans had finished deciding if the weapon was real. The forktailed devil was so effective that Japan responded to it faster than America's own bureaucracy did.

[00:58:55]That document is now held in the National Archives. It sits in a box with a reference number that most people will never look up, but it is there. the evidence that Japan took Kelly Johnson's geometry lesson seriously before Washington fully did. From a Michigan farm boy who learned to fix things because his family couldn't afford to pay anyone else to the most sophisticated aerial gunnery system of the Second World War. From a design so strange that the British canled their order and American generals called it a mechanic's nightmare to a weapon that appeared in the training circulars of a terrified enemy 6 weeks before its own government fully authorized its production.

[00:59:36]from 14 kills in October 1942 to 288 aircraft destroyed in 4 minutes at Helandia and ultimately to a gunnery principle that has been standard in every American fighter built for the last 80 years. Kelly Johnson proved that the most dangerous thing you can do in any system, military, industrial, or otherwise, is look at the assumption everyone else accepts and ask why.

[01:00:02]Roughly 9,923 P38s were built. Fewer than 20 can still fly. Most of them are at the bottom of the Pacific or crushed into scrap on beaches that have long since been reclaimed by jungle. But the geometry they demonstrated is still flying today in every aircraft that puts its gun on the center line and points it straight forward without calculating where the bullets will cross.

[01:00:27]The forktailed devil is gone. The lesson never left.

[01:00:32]If you have sat with this story for the last four parts, you already know why it needed to be told.

[01:00:39]Not because of the kill counts, though those matter. Not because of the technology, though that matters, too.

[01:00:46]But because Richard Bong flew 40 missions and survived all of them and died on a Tuesday morning test flight at 24 years old. Because Tommy Maguire broke his own rules to save a man behind him and paid for it. Because Kelly Johnson spent three weeks in a laboratory fixing a lubrication problem that nobody with authority over him thought was worth fixing.

[01:01:08]>> By these were people doing the hardest possible version of their jobs in the worst possible conditions against an enemy who was also brave and skilled and determined and they found a way to do it better.

[01:01:24]If you know a story like this one, a story about an idea that was called insane before it was called essential, share it in the comments. History is full of them. We just have to keep looking. Subscribe. Turn on notifications. The forktailed devil is one of a hundred stories exactly like it waiting in the archives.

[01:01:45]The ones who called it impossible never built anything worth remembering. The ones who built it anyway changed everything.