BOISE, Idaho (AP) — After the two Navy jets collided in midair, the planes sandwiched together, all four crew members were able to eject and deploy their parachutes, floating down to safety as the aircraft careened into a field, exploding into a fireball.

That dramatic white cone around a fighter jet looks like the exact moment it smashes through the sound barrier, but that is the myth. A real shock wave is so thin that the human eye normally cannot see it,