...you are probably right on that one.... also, the Boeing KC-135 tanker fleet is, if anything, even older than the B-52 fleet... and the KC-135s have been given many, many upgrades and improvements over the past few years, and like the Energizer Bunny, they just keep on goin' and goin' and goin' .........I'm not sure where the KC-135 tanker replacement aircraft is in the scheme of things... there was a lot of controversy several years ago over that project.....I guess, though, if you have unmanned bombers and fighters, probably no need for refuelers, either...
The KC-135 is the USAF version of the Boeing 707. Can't swear to it, but I don't think they are older then the 52's.
I heard at one time the KC-135 replacement was going to be the Boeing 767. Anybody else heard anything like that?