English: A U.S. Marines Corps RQ-21 Blackjack UAS during Weapons and Tactics Instructors Course (WTI) 1-18 at Yuma, Ariz., on Oct. 13, 2017. WTI is a seven week training event hosted by Marine Aviation and Weapons Tactics Squadron One (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. (U.S. Marine Corps photo by Lance Cpl. Rhita Daniel)