U.S. Marines conduct a company live fire exercise during USMC Weapons and Tactics Instructor Course (WTI) 1-17 at Yuma Proving Ground, Arizona. WTI is a seven-week training event hosted by MAWTS-1 cadre which emphasizes operational integration of the six functions of Marine Corps aviation in support of a Marine Air Ground Task Force. 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.