Federal law enforcement officers from the Department of Homeland Security’s HSI Division, Los Angeles, confer with senior officers from the 452nd Airlift Control Flight, March Air Reserve Base, California, before boarding a C-17 Globemaster III, April 17, 2015 at Joint Forces Training Center at Los Alamitos, California. DHS was one of the several affiliates who participated in the annual Patriot Hook Exercise sponsored by the Air Force Reserve Command, which integrates federal agencies with the military. (U.S. Air Force photo/Capt. Cris Medina)