U.S. Army paratroopers, assigned to 1st Battalion, 503rd Infantry Regiment, 173rd Infantry Brigade Combat Team (Airborne), board a CH-47 Chinook during a combined-arms live-fire exercise on March 28, 2014. Grafenwoehr and Hohenfels Training Areas in order to prepare the 12th Combat Aviation Brigade to deploy to Afghanistan to provide medical evacuation and combat support to the NATO International Security Assistance Force mission. (U.S. Army photo by Gertrud Zach/released)