Defenders train during CRC
Defenders from the 51st Security Forces Squadron roleplay as opposition forces as part of a simulated attack during a Combat Readiness Course at Osan Air Base, Republic of Korea, Nov. 2, 2017. CRC is a 10 day, two phase course designed to prepare individuals for the 51st Fighter Wing's wartime mission by executing realistic scenarios throughout the installation. (U.S. Air Force photo by Senior Airman Gwendalyn Smith)