U.S. Marine Lance Cpl. Steven Knapp fires at his target during a marksmanship qualification course aboard the dock landing ship USS Rushmore in the Indian Ocean, Sept. 24, 2015. The course focused on sharpening marksmanship skills under the cover of darkness. Knapp is a team leader assigned to Kilo Company, Battalion Landing Team 3rd Battalion, 1st Marine Regiment, 15th Marine Expeditionary Unit. U.S. Marine Corps photo by Sgt. Emmanuel Ramos