If the claim that sparked the question is the one I think it is, it would have been a Vietnam era plane. In broad terms, it's that the blast of fire from a "wet start" was sufficient to "cook off" munitions on the plane behind it.

I find it hard to accept that a plane would be allowed to start if there was another close enough to reach with that, but I'm sure others (Don) can give a more official version of the rules.

__________________
A Nerd can figure out how long it will take the original Enterprise traveling at warp 6.5 to travel from Regulus to Antares.
A Geek will think he can use that to pick up a girl in a bar.
A Dork knows he can't pick up the girl with it, but will hang around for hours anyway, just in case she asks.
She might. You never know.