A U.S. Marine Corps infantryman with 1st Battalion, 5th Marine Regiment, 1st Marine Division participate in a heavy huey raid exercise during Weapons and Tactics Instructor (WTI) Course 2-15 at Yuma Proving Grounds near Yuma, Ariz., April 8, 2015. WTI is a seven-week event hosted by Marine Aviation Weapons and Tactics Squadron One (MAWTS-1) cadre. MAWTS-1 provides standardized tactical training and certification of unit instructor qualifications to support Marine aviation Training and Readiness and assists in developing and employing aviation weapons and tactics. (U.S. Marine Corps photo by Cpl. Xzavior T. McNeal, MAWTS-1 Combat Camera/Released)