From left, U.S. Air Force Airman 1st Class Jeromy Walley and Senior Airman Nicholas Garcia, both first responders with the 86th Security Forces Squadron, clear a locker room during an active-shooter training scenario April 9, 2014, at Ramstein Air Base, Germany. The exercise was designed to evaluate skills when responding to an unfamiliar environment that included an active shooter firing blank rounds with simulated civilian casualties.