Oh a random factoid from the aviation museum. As the U.S. Air Force started retiring B-52's and replacing them with newer B-52's and other bombers they would move them around the ramps and sometimes even fly them to confuse the Russians into thinking we have more than we actually do. To this day Russian satellite's still check up on the fleet including the one at the museum here in Wichita.
Can't find it with a quick check, but I thought I read one time there were some of them (or other strategic bombers) sitting in one of the graveyards with holes cut in the top of them as part of the agreement for arms reduction...the holes in the top were so that russian satellites could verify they were non-operational.
Another fun fact, the overall airframe design will likely be in service (with upgraded systems, obvs) for 100 years.