Like most press photos, the photos were needed short-notice, so I hand delivered them the next morning while taking care of a few other things at Dulles. While there the next day, I stopped by MWAA's Shop 1, where maintenance continually takes place behind the scenes to keep Dulles' fleet of Plane Mates and Mobile Lounges operating and serving passengers. This is an unseen side of Dulles, but it is vital to the airports ongoing function.
Since the AeroTrain's opening in 2010, Mobile Lounge need and use has dropped dramatically, however there are some functions for which these fascinating behemoths are still required. All arriving international passengers are transported to the International Arrivals Building for customs processing via Plane Mate, and there are a number of concourse areas which are not serviced by the AeroTrain, so Mobile Lounges are still utilized. Additionally, Plane Mates are used to transport passengers to and from aircraft parked on hardstands.
While Plane Mates are colloquially known as Mobile Lounges, at Dulles, Mobile Lounge typically refers only to the Bud Lounges original and unique to the airport, which have driver cabs on both the front and back, whereas Plane Mate refers only to the lounges as seen below, easily distinguished by the extendable canopy, and "shark fins" which house the screw-lifts to raise and lower the lounge's height.