Life imitates art.*

A South Korean maritime patrol airplane lost its entire loadout of live weapons when a crew member accidentally hit the wrong button. Nearly $5 million dollars' worth of weapons tumbled into the Sea of Japan. The South Korean military is attempting to recover the weapons, which it says were not armed when lost.
http://www.popularmechanics.com/mili...c=socialflowTW

*
Sergeant Frank Tree: You shouldn't touch the ordnance at all. But more specifically, you should never pull this hand-operating lever to the rear.
Ward Douglas: Never.
Sergeant Frank Tree: Do not push a clip of ammunition down into the feed rollers here.
Ward Douglas: No, sir, never.
Sergeant Frank Tree: You never restore this lever to firing position. Do not make sure that this cover is completely closed.
Ward Douglas: No sir.
Sergeant Frank Tree: Never depress operator's foot triggers here, here and at the rear here.