I saw something similar at the Udvar-Hazy Museum at IAD when I was killing time during an extended airport sit. No less than FOUR pilots in full uniforms strolling around the exhibits. Granted, it is very close to the airport and easily accessible by public transit. And full disclosure: they had done probably the same "ditch the bags in the crew room quick and catch the bus" routine i had done. But for the love of Pete, at least have the decency to loose the epaulets, brass and ID!