Just jumpseated from MSP to IAD (in a CRJ?) today and was almost denied boarding because of the CASS system. I wasn't sure of my companys 2 letter identifier so the gate agent said I was out of luck. I called my company, got the code and was able to make the flight. I have NEVER been asked for a 2 letter code before. She said something about the new cass system and how my airline might not be part of it. What the hell is CASS (if that's how you spell it)?! Thanks!
Mike
Mike