Just as SLF watching the crew coming through the security checkpoints, can I ask this?
I believe it's quite easy to buy a current airline uniform or something that looks pretty close. How easy would it be to mock up something that looks pretty close to whatever passes you have to identify yourselves as crew? We all know the TSA screeners are never going to be forgery-detection experts. How easy would it be for an imposter to fool them into believing that they really are crew?