Each year Bill brings a crew to clean Air Force One and the Concorde. His company is http://www.billthebuffman.com/ and he and the crew VOLUNTEER their time to clean these historic air craft!
I was at the Museum of Flight for a noon presentation so I went over to the Air Park to see the action.
This is the same crew who cleaned the Electra before it was delivered. I met them on the day it was delivered when I sketched it on the flight line.