Well, sure - it's an employment check the airlines do, even for the flight attendants, but certainly for pilots, and even more so if they're in the program that allows them to carry concealed on board.
Funny, though, how the baggage handlers have virtually the same access, but very little employment screening.
I'm personally amazed the muzzies haven't either themselves or using a compromised baggage handler, introduced a suitcase bomb into a jet somewhere... or maybe they already have (those "missing" airliners).
I used to work for the agency in this article. While we searched luggage the baggage handlers were waiting to clear the luggage and haul it off. The smell of MJ from them was overpowering. Glassy bloodshot eyes,munchies, the works
In another case one of our employees was fired for being drunk at work. I was told he blew a 0.19. A few weeks later he went to work for a major carrier driving the luggage carriers that take your suitcases to be loaded on the aircraft. That went on for a few months then he disappeared. I figured that he had his same problems ie: being drunk on the job.
Sometime later I had to get my Driving record pulled for a job I was applying for. I went to the DMV in Marin county and who was behind a desk handing out forms, the drunk from the airport.