Flying pup A United Parcel Service “pup” trailer on a TTX spine car speeds by milepost 550 on an eastbound Union Pacific intermodal train between Colores and Hermosa, Wyoming, on May 28, 2009, as seen in a panned photograph.
Pace and pan shots of trains from on the ground or in the air. If you're not in the locomotive cab or on-board the train, it's the next best thing to being there.
