Marines from the 13th Marine Expeditionary Unit fire a M240G machine gun during a joint-branch air assault exercise involving reinforcing and clearing a mock town after being transported by UH-60 Black Hawks operated by A Company, 3rd Battalion, 142nd Attack Helicopter Company, 42nd Combat Aviation Brigade, Jan. 20, 2013, near Camp Buehring, Kuwait. The 42nd CAB, New York Army National Guard, operates rotary winged aircraft in the region in support of Operation Enduring Freedom, and regularly trains with other U.S. military branches to enhance joint service capabilities. (N.Y. Army National Guard photo by Spc. Harley Jelis/Released)