Yes, that's Andrews AFB.
You will also hear Air Force 1 & 2 on USB (Upper Side Band), sometimes near the 18.100 Amateur Radio Band. You can easily find very good lists on the internet on what frequencies they frequent--depending on propagation at the time.
I won't give out his callsign, but there was, during the Regan and first Bush administration, a ham radio operator who was an officer on the flight deck(and long time friend of mine) who when things were a little slow, would come down to 20M (14,310 mHz) and hand out contacts "Aboard Air Force One". He had cleared, in advance, permission to do it.
It was AWESOME during the first Desert Storm to listen to military air operations and some dogfights early on on USB on the higher bands during the day.
Oh...how we yearn for the return of sunspots!!
ROX