[Left to right] U.S. Air Force Senior Airman Jeremy Cole, 20th Medical Group mental health specialist, briefs Senior Airman Alan Manuszak, 20th Communications Squadron radio frequency specialist, on how to perform a post-attack reconnaissance sweep, Shaw Air Force Base, S.C., March 18, 2014. Cole and Manuszak participated in chemical, biological, radioactive and nuclear training that refreshed their knowledge of alarm signals, mission oriented protective posture levels, and how to perform a PAR sweep. (U.S. Air Force photo by Airman 1st Class Michael A. Cossaboom/Released)