Dude, light a match I can’t find the gas cap on my car.
BOOM
They put them in the safe to keep them SAFE. You can buy expensive fireworks here in NH. Literally, $60-80 or more a pop.
You can not buy Class A fireworks, but pretty close.
I don’t see ammo being set off this way unless the torch hits the brass directly. Even then it probably would be just that one round or maybe a handful.
A canister of black powder or maybe some dynamite???
Keep his kids from using them up...
So some idiot tossing a cigarette away in the wrong place is less likely to blow up the place?
The fireworks were likely in the safe for safety reasons, on the belief that the safe could contain the explosion. However, these two individuals had likely cut through part of the safe door, weakening it enough so that the explosion blew it apart.
Truthfully, the best way to store explosives is in a strong “metal wicker” basket, of the type used by police EOD, because it allows the high pressure of the blast out, but contains fragmentation.
By accident, in Iraq, somebody discovered that if you painted concrete with truck bed liner paint, while a bomb might fragment the concrete, the paint would still hold it together so it didn’t turn into projectiles.