Yes, the current VC-25A aircraft (the two modified Boeing 747-200Bs used as Air Force One) are fully capable of mid-air refueling. This feature gives the President essentially unlimited range, allowing the aircraft to stay airborne for days at a time in the event of a national emergency or if ground refueling is unsafe. Refueling is accomplished via a "boom" receptacle located in a distinctive hump on the nose of the aircraft. Interestingly, while the capability exists and is routinely tested by the pilots for training purposes, it is almost never used during standard Presidential travel. In 2026, as the new VC-25B (modified 747-8s) are being prepared for service, there has been significant technical debate regarding their refueling capabilities, but the "unlimited range" remains a core requirement for the "flying Oval Office" to ensure the continuity of government under any circumstances, functioning as a mobile command center high above the earth.