MARINE CORPS AIR STATION YUMA, Ariz. (Oct. 16, 2020) A U.S. Marine Corps crew member prepares for flight during Weapons and Tactics Instructor (WTI) course 1-21, at Marine Corps Air Station Yuma, Arizona, Oct. 16, 2020. The WTI course is a seven-week training event hosted by Marine Aviation Weapons and Tactics Squadron One, providing standardized advanced 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 Lance Cpl. Larisa Chavez)