Why Two EA-18Gs Didn't Explode After a Mid-Air Collision

Added: 2026-05-19

[00:00:00]Why didn't they explode in the air? That is the weirdest plane crash I have ever seen. I thought it was AI.

[00:00:07]This is the first time we've seen an F-36.

[00:00:10]The comments came in millions. Most of them were wrong. Wrong aircraft, wrong physics, wrong question.

[00:00:18]But the one question that kept repeating was the right place to start.

[00:00:22]That is the first thing everyone asked when two EA-18G Growlers collided in midair over Idaho.

[00:00:29]Nearly 28,000 lb of jet fuel between the two aircraft, enough chemical energy to flatten a city block, and not a single flame until the wreckage hit the ground.

[00:00:39]They locked together. They pitched up.

[00:00:42]They stalled. They fell. And somewhere between the collision and the ground, all four crew members pulled a handle and rode a rocket out of the cockpit.

[00:00:51]Every one of them survived. The explosion question is the obvious question, but it is the wrong one.

[00:00:57]Because the physics that kept 28,000 lb of fuel from igniting is the same physics that held the airframe together long enough for the fuel to disperse, and the same physics that slowed the aircraft just enough for the ejection seats to fire.

[00:01:11]Three engineering systems, one chain, a few seconds of margin between survival and catastrophe, and every second was earned, not given.

[00:01:20]This is Air Power Decoded, and it starts with the seconds no one counted.

[00:01:28]VAQ-129 Vikings is not a combat squadron. It is the United States Navy's fleet replacement squadron for the EA-18G Growler, the unit responsible for training every Growler pilot and electronic warfare officer in the Navy, the Marine Corps, the Air Force, and allied nations before they deploy.

[00:01:50]VAQ-129 also manages the EA-18G Growler demo team. On May 17th, 2026, two of their aircraft were performing an aerial demonstration at the Gunfighters Skies Air Show at Mountain Home Air Force Base in Idaho.

[00:02:06]At approximately 12:10 in the afternoon, they collided. The crews ejected. All four survived. The aircraft did not.

[00:02:15]Call it a miracle. Four people walking away from a mid-air collision at air show speed deserves that word. But miracles have mechanisms, and this one had three.

[00:02:26]The collision should have been unsurvivable. The fuel should have ignited. The ejection seats should have failed in conditions they were never certified for.

[00:02:34]None of that happened, and the physics behind all three is the same. Each answer is a physics problem, and each physics problem has the same conclusion.

[00:02:48]An EA-18G Growler in demonstration configuration weighs roughly 44,000 to 50,000 lb, lighter than a full combat sortie, but still more than 20 tons.

[00:03:00]It has a wingspan of nearly 45 ft.

[00:03:03]Its twin F414 engines generate enough thrust to push it past Mach 1.8.

[00:03:10]And during an air show formation pass, it flies within feet of another aircraft that is identical in every way.

[00:03:17]That is the trade.

[00:03:18]Formation flying is the deliberate exchange of safety margin for precision.

[00:03:24]In normal operations, in combat, in cruise, in transit, aircraft are separated by miles of airspace, managed by radar, deconflicted by altitude blocks and timing.

[00:03:35]The entire system of military airspace management is designed to keep high-performance aircraft as far from each other as possible.

[00:03:43]An air show inverts that system entirely.

[00:03:47]The entire point is proximity.

[00:03:49]The cameras need both jets in the frame.

[00:03:52]The crowd needs to see the formation.

[00:03:54]The demonstration exists to showcase exactly what these aircraft can do when flown in close coordination.

[00:04:01]So, the separation that is measured in miles becomes a separation measured in feet.

[00:04:07]And when two objects are separated by feet, the physics of closure rate becomes ruthless.

[00:04:13]Closure rate is not the speed of one aircraft. It is the speed at which the distance between two aircraft is collapsing.

[00:04:20]If the trailing jet is approaching the lead aircraft at 10 knots faster than the lead is flying, a difference that would be invisible to any observer on the ground, a difference the trailing pilot might not even register consciously, that gap is shrinking at roughly 17 ft per second.

[00:04:36]At a conservative formation speed of 300 knots, 50 ft of separation disappears in under a tenth of a second.

[00:04:46]Here's the problem with that number.

[00:04:48]The neural signal from the human eye to the human hand takes at least 150 milliseconds for a simple reflex.

[00:04:55]Recognizing a closure rate threat, processing the visual information, determining that action is required, deciding what action, and moving the controls adds another several hundred milliseconds that, at this distance, [music] does not exist.

[00:05:10]This is not a failure of pilot training.

[00:05:13]Both crew members of VAQ-129 were among the most qualified Growler aviators in the world.

[00:05:19]This is a failure of the speed at which carbon-based nervous systems can process information relative to the speed at which aluminum and titanium alloy frames close the gap between them.

[00:05:30]It is worth noting the role that wake turbulence may have played in this specific event. The investigation has not yet determined cause, but it is a physics factor that is always present in formation flight.

[00:05:42]Every wing generates two counter-rotating vortices at its tips, rolling outward and downward.

[00:05:48]At low speed and high angle of attack, typical of a demonstration pass, those vortices are at their strongest.

[00:05:55]An aircraft flying in trail is flying directly into the disturbed air left behind by the aircraft ahead of it.

[00:06:02]A sudden, unexpected roll or pitch from an invisible vortex encounter narrows the window of reaction further still.

[00:06:10]The 1966 collision between an XB-70 Valkyrie and an F-104 Starfighter was caused by exactly this. The smaller aircraft caught in the bomber's wake and unable to recover before contact.

[00:06:24]Closure rate does not discriminate between practice and combat, between air show and deployment.

[00:06:30]It is a physical constant. And it was present over Idaho that day in full force.

[00:06:36]The collision happened. The question now is what happened next.

[00:06:42]When two aircraft weighing tens of thousands of pounds strike each other at speed, the mechanical energy released is enormous.

[00:06:50]Metal shears, structures deform. The geometry that gave both aircraft their aerodynamic integrity, the carefully shaped wing surfaces, the precisely angled control surfaces, the sealed fuel systems, is suddenly and violently compromised.

[00:07:07]There are nearly 14,000 lb of JP-5 jet fuel in each aircraft. Two aircraft.

[00:07:13]That is the energy equivalent of a very large bomb, and none of it detonated in the air.

[00:07:19]Here is why.

[00:07:21]Jet fuel is not an explosive. It is a combustible liquid.

[00:07:25]>> [music] >> The difference is not semantic. It is the difference between life and death for four aircrew.

[00:07:31]An explosive releases energy in microseconds through a self-sustaining chemical chain reaction.

[00:07:37]A combustible liquid releases energy only when it achieves three conditions simultaneously.

[00:07:43]It must be broken into fine enough droplets to mix with air. Those droplets must be in contact with a source of ignition, and the temperature of that fuel must be above its flash point.

[00:07:54]The US Navy uses JP-5 specifically because its flash point is exceptionally high, at least 140° F 60° C.

[00:08:04]That is not an is a decision made after watching what happened on carrier flight decks when fuel with a lower flash point was involved in accidents.

[00:08:14]JP-8, the Air Force standard, has a flash point of just 100° F 38° C.

[00:08:21]Automotive gasoline can flash at temperatures well below freezing.

[00:08:25]JP-5 was engineered to be inert in all conditions except deliberate combustion.

[00:08:33]When the collision fractured the fuel systems, JP-5 did what JP-5 is designed to do. It did nothing.

[00:08:41]More precisely, the fuel that escaped the tanks was moving through the slipstream at air show speed.

[00:08:46]That slipstream is a river of air moving hundreds of feet per second relative to the aircraft.

[00:08:52]Any liquid fuel that escaped the tanks was immediately swept away from the aircraft and dispersed before it could aerosolize sufficiently in proximity to a heat source.

[00:09:02]The conditions for combustion, the fuel, the oxygen, the temperature, and the ignition source never converged in the same place at the same time.

[00:09:11]The ground is a different story.

[00:09:14]Ground impact creates all three conditions simultaneously.

[00:09:17]Tanks rupture completely, metal grinding at hundreds of feet per second generate sparks, and engine debris provides heat.

[00:09:25]The fireball that spectators witnessed happened when the wreckage hit the ground, not 1 second before.

[00:09:32]That distinction saved four lives.

[00:09:35]But the fuel chemistry alone does not explain the window.

[00:09:39]For the fuel not to ignite in the air, the airframe had to hold together long enough for the fuel to disperse.

[00:09:45]And here the engineering runs deeper than chemistry.

[00:09:48]The EA-18G Growler is built on the Super Hornet airframe. A structure designed and certified to withstand 7.5 times the force of gravity. With that limit enforced by a fly-by-wire flight control system.

[00:10:02]The material choices, titanium alloys, aluminum-lithium composites, carbon fiber panels, were made under a design philosophy called damage tolerance.

[00:10:13]The airframe is not designed to be indestructible. It is designed to fail gradually rather than catastrophically.

[00:10:20]The collision damaged the structure.

[00:10:21][music] It deformed it. It did not crush the fuel tanks in the first instant.

[00:10:26]That fraction of a second, the time between structural deformation and structural collapse, is where the next system stepped in.

[00:10:36]When the two Growlers made contact, something unexpected happened.

[00:10:40]>> [music] >> Instead of simply disintegrating, they locked together.

[00:10:45]From what we can see in the footage, the aft section of the trailing aircraft became mechanically entangled with the lead. The exact mechanism is still under investigation, but the physical consequence is unmistakable.

[00:10:58]The collision introduced a sudden, massive change in the combined center of gravity of the two aircraft, while simultaneously destroying the lift distribution across both wing surfaces.

[00:11:09]The result was a violent pitch up.

[00:11:12]A nose-up pitch at low air speed does only one thing. It kills lift faster.

[00:11:18]The combined mass of both aircraft, now aerodynamically incoherent, began to bleed airspeed rapidly.

[00:11:24]The nose rose. The airspeed fell.

[00:11:28]The aircraft entered a stall.

[00:11:30]In almost any other scenario, a stall at low altitude is the end of the story.

[00:11:35]In this specific scenario, it created the window.

[00:11:39]A stall is the moment when lift collapses.

[00:11:42]Airspeed approaches zero. And with it, the G-forces that pin a pilot into their seat. Forces that can exceed seven times the weight of a human body during high-performance maneuvering.

[00:11:54]Those forces disappear.

[00:11:57]In the stall, briefly, the cockpit environment becomes almost quiet.

[00:12:01]The crushing force of the flight regime releases.

[00:12:07]That release is the window.

[00:12:10]A pilot can move their arms. They can reach a handle.

[00:12:13]Most fighter pilots will never pull that handle.

[00:12:16]Across an entire career, thousands of flight hours, hundreds of combat sorties, the ejection seat sits there and does nothing.

[00:12:25]There is no official limit on how many times a pilot can eject.

[00:12:29]The limit is biological.

[00:12:31]Each ejection drives 12 to 20 times the force of gravity through a human spine in under a second.

[00:12:37]The spine can survive that. Once, maybe twice.

[00:12:41]After that, the math stops working in your favor.

[00:12:45]The handle they reached for is connected to the NACES, [music] the Navy Air Crew Common Ejection Seat, designated SJU-17, manufactured by Martin-Baker.

[00:12:56]It is a zero-zero seat, certified to save a pilot at zero airspeed and zero altitude. Even on a stationary aircraft on the ground, provided the aircraft attitude is near level.

[00:13:08]The NACES does not work on a fixed timer.

[00:13:10]It works on a sequencer, an electronic system that reads the environment in the first 60 milliseconds after the handle is pulled, sampling airspeed and altitude, and calculates precisely how much rocket thrust is required to propel the seat occupant to an altitude sufficient for the parachute to fully deploy.

[00:13:28]It is not guessing.

[00:13:30]>> [music] >> It is solving an equation in real time with the answer needed in fractions of a second.

[00:13:36]Canopy jettison, rocket motor, drogue chute, main chute, >> [music] >> four people, four handles pulled, four sequencers reading a sky that had just been rearranged by a collision neither aircraft was designed to survive.

[00:13:51]All four chutes opened. All four crew members reached the ground alive.

[00:13:56]The aircraft, no longer carrying the people they were built to protect, continued their fall and struck the ground northwest of the base.

[00:14:04]The fuel that had remained liquid and dispersed in the air finally met the conditions it needed.

[00:14:09]The fireball happened then after the ejection seats had already done their work.

[00:14:15]The sequencer works in milliseconds.

[00:14:17]The window existed in seconds.

[00:14:20]Four pilots made it in time, not because they were lucky, but because the aircraft was already failing slowly enough for the seat to do its job.

[00:14:33]Step back from the three systems and look at what they share.

[00:14:36]The airframe was not built to survive a midair collision.

[00:14:40]The JP-5 was not formulated specifically for this altitude and this impact angle.

[00:14:46]The NAACEE's was not designed with this exact entanglement geometry in mind.

[00:14:52]And yet all three performed exactly as required in exactly the right sequence for exactly as long as was necessary.

[00:15:01]This is not a coincidence.

[00:15:03]It is the engineering doctrine called defense in depth.

[00:15:07]The principle that survivability does not come from one unbreakable system, but from multiple systems that each fail slowly enough to give the next one time to activate.

[00:15:17]Follow the chain.

[00:15:19]The airframe absorbed the collision without immediately crushing the fuel tanks. And because the tanks held, the fuel had time to disperse into the slipstream >> [music] >> instead of pooling around a heat source.

[00:15:31]Because the fuel dispersed, there was no fireball.

[00:15:35]And without a fireball, the stall had time to develop, bleeding off the airspeed and the G-forces that would have pinned every crew member into their seat.

[00:15:44]And because the G-forces released, four hands reached four handles and four sequencers fired before the ground arrived.

[00:15:52]No single system saved four lives.

[00:15:55]The chain did. Each link holding just long enough to hand the load to the next. Consider what actually started this. Not a catastrophic failure. Not a mechanical malfunction. Just two objects moving through the same space at slightly different speeds. And the physics of closing distance doing what it always does. Indifferent to the fact that people were inside.

[00:16:19]But the aircraft were not indifferent.

[00:16:22]The collision destroyed both machines.

[00:16:24]That was always the expected outcome.

[00:16:27]What was also expected, designed for, and engineered into every structural decision from day one, was that the people inside would have time to leave.

[00:16:36]The Growler is not primarily an aircraft. It is a system for keeping its crew alive long enough to complete a mission. Or, [music] when the mission goes catastrophically wrong, long enough to escape.

[00:16:49]The word miracle implies an absence of mechanism.

[00:16:52]There was no absence of mechanism over Idaho that day. There was a chain of mechanisms, each one doing exactly what it was built to do in a scenario none of them were told to expect.

[00:17:06]We build machines to fight.

[00:17:08]We spend billions engineering speed, stealth, sensors, and weapons. We measure success in range and payload and radar cross-section.

[00:17:17]But the engineering that matters most is never in the offensive systems. It is in the question that every airframe designer has to answer before any of that.

[00:17:27]If everything goes wrong at once, how much time do we need to give the crew to escape?

[00:17:33]VAQ-129 will mourn two aircraft. They are irreplaceable.

[00:17:38]>> [music] >> Each EA-18G Growler cost the Navy roughly $67 million apiece and only 172 were ever built.

[00:17:47]The four people who were inside those aircraft walked away. They are not irreplaceable. No human being is replaceable, but they are alive. And they are alive because three engineering systems working in sequence bought enough time. The investigation will determine what caused this collision.

[00:18:05]The physics has already determined why it did not become the catastrophe it appeared to be.

[00:18:10]Subscribe to Air Power Decoded. The next time you see footage of a midair collision and someone says it was a miracle, ask yourself what mechanisms were running in the background that no one is counting. Because in the real sky, physics does not deal in miracles.

[00:18:25]It deals in margins. And when the margins hold, that is the engineering working exactly as designed. So here is the question that will stay with you.

[00:18:34]How many other systems in your life were built the same way? Designed not to prevent failure, but to fail slowly enough for you to escape.