BYU makes a lot of sense...not sure about Air Force, though having lived in Colorado Springs, it is a simply awesome university. Decent stadium as well but its a bit surprising if you look only at the money side of things.
The politicians in Utah threw a fit when there was a possibility of the Utes going to the PAC 10. And since most of the politicians in Utah are LDS, they won't let the two be sepatrated.