The USAF claims the VC-25 (Air Force One) aircraft are in-flight refuelable.
Do you have any idea why The Messiah stopped at Elmendorf to refuel, other than as an opportunity to blather on again?
Personally I think he only stopped here by what he actually said in his speech, and he most pointedly referred to Alaska as the last of 50 states for him to visit.
He knows about his 57 state preference, he also knows its a tradition for any POTUS traveling to Asia to stop in Alaska, I was in Anchoarge when Bill Clinton arrived, I actually was within several hundred feet of his motorcade when it passed by, weirdest thing I ever saw in my life all the escort vehicles, the gunships overhead and the absolute efficiency of it passing by.