Staff Sgt. John Pudowski, the master driver in the 416th Theater Engineer Command (TEC) and police officer in the Chicago police department, reacts to a scenario, during active shooter training held at the TEC headquarters in Darien, Ill. The training provided by Special Agent Culloton gave Soldiers tools to react and protect themselves in an active shooter situation, Aug. 6, 2016. (U.S. Army photo by Spc. Brianna Saville/Released)