This is another Police story but I like it:
The Chief Constable decided he wanted to get a first hand perspective on what his officers were faced with on a daily basis, so went on patrol with a young constable. They were driving round the local housing estate when they spotted trouble erupting between gangs of youths.
The young constable headed towards the scene and asked the CC to call for backup. The CC grabs the radio microphone, quickly scans the patrol car's dashboard for the call sign and spotting a small piece of Dymo tape, keys the mic:
"Foxtrot 30, Romeo 32, requesting immediate backup"
"Er, Sir" says the young constable, "You've just read out the tyre pressures"