U.S. Soldiers, Sailors, Airmen and Marines prepare for litter carries during tactical combat casualty care training here March 12, 2015, as part of Operational Contract Support Joint Exercise 2015. The exercise focuses on producing shelf-ready products for future operations, training the workforce and increasing senior leader awareness and involvement in Operational Contract Support. (U.S. Air Force photo by Staff Sgt. Veronica Montes)