I have a big problem with these imbeciles working on the government payroll.
I'll spot you the non-citizens in your comment, but there are quite a few (read: a LOT of) current and former members of the Armed Forces who never completed high school. If we can issue them automatic weapons and let them operate sophisticated weapons systems, then I see no problem with folks who didn't get a diploma serving as screeners.
But if someone who would raise a flag to most screeners is currently serving as one, well, I'd say we have a problem.