I just popped in and had a chat with them - wish i hadnt bothered!
"are you a mechanic"
"no, im an engineer but i work on and repair vehicles"
"oh, so your an engineer in the army"
"no, i never mentioned the army, im an engineer, i dont have a mechanics qualification so im not a mechanic, but i am an engineer and work on vehicles"
"in the army?"
......i give up and walk away!