Sgt. Justin Glenn Burnside motivates a recruit with Echo Company, 2nd Recruit Training Battalion at Marine Corps Recruit Depot Parris Island, SC on April 16, 2013. Burnside, originally a signal intelligence specialist from Bristol Fla., is one of about 600 drill instructors who shape the approximately 20,000 recruits through Parris Island annually into United States Marines. This handful of dedicated DIs is entrusted with sustaining a more than 237-year legacy. (U.S. Marine Corps photo by Lance Cpl. David Bessey)