When I was interning for an airline a few years back, I was non-revving from SAN to LAX. Usually, I didn't need to have a boarding pass since my company ID badge would let me through. Once in line, the TSA lady (had to be fresh out of high school) looked at my badge and said, "I think you need a boarding pass."
I said, "You think I do? Well, do you think I should go and get one?"
"Well, your badge doesn't say 'Flight Crew' on it, so I think you need a pass. I'll have to ask my manager."
She didn't budge. "So, are you going to ask him now or do you still think I need one?"
She says, "Naw, you can go ahead. But I think you'll need one next time."
"Ok, I think I'll get one next time," as I strolled right through. She was completely oblivious.
It was a company badge, no SIDA.