Four UH-40 Black Hawk helicopters assigned to the 42nd Combat Aviation Brigade of the New York National Guard prepare to drop off soldiers of 1st Battalion, 67th Armor Regiment, 2nd Armored Brigade Combat Brigade Team, 4th Infantry Division as part of an air assault mission during a bilateral exercise in the US Central Command area of responsibility, Feb. 19, 2014. The week-long military-to-military exercise fostered partnership and interoperability. (U.S. Army photo by Staff Sgt. Andrew Porch, 2nd ABCT PAO, 4th Inf. Div.)