A U.S. Marine Corps AH-1Z Viper assigned to Marine Aviation Weapons and Tactics Squadron One (MAWTS-1) conducts an offensive air support exercise at Mt. Barrow, Chocolate Mountain Aerial Gunnery Range, Calif., Oct. 6, 2015. The exercise is part of Weapons and Tactics Instructor (WTI) 1-16, a seven-week training event hosted by 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 SSgt. Artur Shvartsberg, MAWTS-1 COMCAM/ Released)