"They range in capability from the best out there to people I wouldn't let set foot in an aircraft."
Indeed, Cyclic....my ex-employer was FAA A & P;
He once asked me what a "Spar" was.....
He didn't realise that PR1422 was two-part and needed activator as well.....
and didn't agree that LRU's with 'O' rings inside needed to have a shelf-life!!!!!
But that said, he was the professional one; or so he told me!!!