That's just the President going home after his visit with the Strategic Air Command in Nebraska.
No such creature, not for a good long time now. Strategic Command (StratCom) is at Offutt, but its a unified command with no assets of it's own (Air Combat Command owns the bomber aircraft, Navy owns the boomer submarines). Commander is currently a Navy Admiral. Airborne Command Post is based at Offutt as are various recon versions of the -135 aircraft.