KUNSAN AIR BASE, Republic of Korea --   8th Security Forces Squadron defenders and 8th Operations Support Squadron Survival, Evasion, Resistance and Escape (SERE) specialists use a smoke grenade to simulate a ground attack during a routine training event at Kunsan Air Base, Republic of Korea, Sept. 29, 2021. The 8th OSS SERE specialists contributed their expertise for remote and hostile environment survival, in support of the 8th SFS defenders showcasing their abilities during a simulated ground attack by defending the installation and neutralizing adversarial personnel. (U.S. Air Force photo by Staff Sgt. Mya M. Crosby)