I deplaned once at IAD via the "moon patrol movers" a couple years ago. It was on a LHR-IAD flight. We landed and our gate was occupied by another bird so we went to a remote spot and they sent the movers. I was in C, and the movers attached to the REAR door, so C & F were the last people off and consequently, the last to reach immigration which was already a mess.
Good ol'e IAD...