Hmm... That looks like an old C-141 Starlifter, which they retired from the Air Force service. I used to work on their engines. (C-141 and KC-135's used to the same TF-33 P-5/7 series Turbofan engines, B-52 used a TF-33 P-3 variant as well.) Although they're retired from service some of the other organizations still fly them occasionally. Not too sure if they still fly them in airshows or not, probably not.
That explains why I haven't seen any 141s in the air in a while. We have an Air Force base in Tucson, and all I really ever see for military cargo planes are C-17s and C-5 Galaxies. Oh, and C-130s, but there's a C-130 squadron out of there.