U.S. Marine Corps Aviation Ground Support students

U.S. Marine Corps Aviation Ground Support students attending Weapons and Tactics Instructor (WTI) Course 1-15 shovel dirt into a crater during an airfield damage repair practical application, at Canon Air Defense Complex (P111), near Yuma, Ariz., Sept. 20, 2014. WTI is a seven-week training 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 photograph by Cpl. Xzavior T. McNeal, COMCAM/ Released)