U.S. Marines and sailors prepare an AV-8B Harrier for takeoff during flight operations on the flight deck of the USS Boxer during Integration Training in the Pacific Ocean, Sept. 25, 2015. The Marines are assigned to Medium Tiltrotor Squadron 166 Reinforced, 13th Marine Expeditionary Unit. The exercise is the first at sea for the newly integrated 13th MEU to prepare all aspects into their forward deployed roles including the air combat element. U.S. Marine Corps photo by Cpl. Briauna Birl