Air Force One, a highly-customized Boeing 747-200B, prepares to land at RAF Fairford, United Kingdom, Sept. 3, 2014. After landing and delivering President Barack Obama to Marine One, Air Force One was refueled and prepped for travel by a team of U.S. Air Force Airmen working at Fairford. (U.S. Air Force photo by Staff Sgt. Jarad A. Denton/Released)