A 10th Air Support Operations Squadron joint terminal attack controller studies a compass during land navigation operations, June 22, 2016, at Fort Riley, Kan. Tenth ASOS JTAC Airmen conducted mission planning and simulated coordination with combat air resources as they performed nighttime convoys and land navigation during their field training exercise. (U.S. Air Force photo/Airman 1st Class Jenna K. Caldwell)