South Korean service members, clad in mission oriented protective posture suits, remove their gas mask carriers and helmets during counter chemical, biological, radiological, nuclear and explosive (CBRNE) training at Kunsan Air Base, Republic of Korea, Feb. 29, 2012. The training, led by U.S. Airmen assigned to the 8th Civil Engineer Squadron, involved joint post attack chemical, biological and radiological reconnaissance operations to determine the extent of CBRNE hazards to the installation.