U.S. Air Force Senior Airman Thomas Schalin, left, a pararescueman with the 83rd Expeditionary Rescue Squadron (ERQS), hands a backpack to Senior Airman Joseph Brady, center, also with the 83rd ERQS, after pulling Airman 1st Class Benjamin Martin, a simulated patient, from a building during a mission rehearsal exercise at Bagram Airfield, Afghanistan, Aug. 26, 2014.