Redtail-
you're right about stealing tools ! It should be a hanging offence. But in my experience it's always other engineers who do the nicking! (I had an entire set of 1/4 dr sockets taken whilst on a 747 major line at LHR with a certain Big Airways.)
Also saw a guy who had a snap on roll trolley with entire snap on contents dissapear overnight! (Not insured as it was not in the approved pen. Ouch!)