U.S. Air Force Airman 1st Class Ronaldo Cruz, 8th Security Forces Squadron response force member, provides security at an entry control point during Exercise Beverly Midnight 15-1, Kunsan Air Base, Republic of Korea, Oct. 21, 2014. Cruz guarded the area as four defenders donned chemical, biological, radiological and nuclear protective gear. The four-day exercise demonstrated the Wolf Pack's ability to work alongside Republic of Korea air force allies as well as their capability of responding to wartime and armistice threats. (U.S. Air Force photo by Senior Airman Katrina Heikkinen/Released)