If I can expand this to movers - who were sort of suppliers by trade - I must retell a tale from my first tour, 78 Sqn in Sharjah.
We flew Wessex, as did the SAR Flight at Muharraq (Bahrein), but 78 normally kept the "Command Spare" unless and until it was needed by the SAR bo(u)ys.
Which they did on one occasion when Baby Pilot Teeters got to deliver it. The SOP was to wait a couple of days to see if they got enough serviceable (enjoying the fleshpots of Bahrein) to give the spare back. If they didn't - as in this case - the delivery crew jumped on the "bus run" Argosy to go home to Sharjah.
Which meant going through Movements in flying kit....
Baby Mover: indicating Mae West "What's that??"
Teeters: "Err, a Mae West..."
BM: "No, what's that?" indicating red knob and inflation bottle.
Teeters: "CO2 bottle to inflate the jacket."
BM: "Aha - compressed gas! Dangerous Air Cargo - can't take it on board!"
So dear friends, my Mae West was so dangerous, it had to remain in Bahrein.........
You couldn't make it up...