I'm fairly certain sydeseet is correct,
I used to work at USAirports as a refueler about 2 years ago and they ran that thing almost like an airline out of the corporate hangar.. They also had a Challenger. I spoke with a friend of mine who still works there and I think I remember him saying the CRJ was gone.
Hey sydeseet, r u from Rochester? I worked over at Bill Law's for a little bit in 2000.