U.S. Marines supporting Weapons and Tactics Instructor (WIT) course 2-14 load a 500 pound joint direct attack ammunitions on to a AV-8B Harrier during a Spider forward arming refueling point in support of Weapons and Tactics Instructor (WTI) course 2-14 at Marine Corps Air Station Yuma, Ariz., March 28, 2014. WTI is a seven week training event hosted by Marine Aviation Weapons and Tactics Squadron One (MAWTS-1) cadre. MAWTS-1 provides 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 photograph by Lance Cpl. Adrianna R. Lincoln, COMCAM/ Released)