Two maintenance Airmen from the 34th Expeditionary Aircraft Maintenance Unit at Anderson Air Base, Guam, check hydraulic fluid during a post-flight inspection on a B-1B Lancer at Osan Air Base, Republic of Korea, Sept. 21, 2016. The B-1 had just conducted its closest flight to the North Korean border ever and is the first to land on the Korean Peninsula since 1996. (U.S. Air Force photo by Senior Airman Victor J. Caputo)