A U.S. Air Force Airman from the 633rd Medical Group prepares to process through a decontamination point during a Phase II Operational Readiness Exercise at Langley Air Force Base, Va., April 20, 2012. Airmen were required to properly de-contaminate if they were suspected of being in contact with simulated-contaminated items. (U.S. Air Force photo by Senior Airman Jarad A. Denton/Released)