Too true, Schnowzer!!
Surely, though, shouldnt the question here be "how did he get on board, through home base security, with a stash of ammunition?" (Or did I miss the explanation of this one?). The rest is entirely consistent with a bloke realising that he has screwed up and trying to sort it without getting into trouble. Good plan, fell short in its execution through sheer bad luck! Along the lines of the hapless character in 'The worst week of my life'.....