U.S. Air Force Airmen from the 35th Aircraft Maintenance Squadron tow an F-16 Fighting Falcon into a hardened aircraft shelter during VIGILANT ACE 18 at Osan Air Base, Republic of Korea, Dec. 5, 2017. Maintainers and pilots worked together to manually push aircraft backwards due to the significant size difference of Osan AB HASs compared to those at Misawa AB. (U.S. Air Force photo by Staff Sgt. Deana Heitzman)