I think he was meaning do they use UHF or VHF. Sometimes (a rarity nowadays) some F15s in formation would do a touch and go off of 25L at LAS, and even if sitting there and watching it happen, if you didn't have a dual band scanner, you'd only hear the tower's side of things, as they would be talking to them on the UHF frequency (257.8, IIRC).
I don't think Air Force One or SAM29000 use UHF, but those at the facilities would know for sure.
BL.