U.S. Air Force Airman 1st Class Michael Branch, 633rd Medical Group pharmacy technician, simulates receiving medication from Airman 1st Class Jessa Gatchalian, 633rd MDG pharmacy technician, during a Major Accident Response Exercise at Langley Air Force Base, Va., July 16, 2013. The exercise tested the 633rd MDG’s ability to activate a point of distribution and dispense prophylaxis. (U.S. Air Force photo by Airman 1st Class Victoria H. Taylor/Released)