A pair of U.S. Army MH-60M Blackhawks and a U.S. Marine Corps CH-53E Super Stallion assigned to Marine Corps Aviation Weapons and Tactics Squadron One (MAWTS-1) conduct an aerial refueling exercise in support of Weapons and Tactics Instructor course (WTI) 1-18 in Yuma, Ariz., Oct. 6, 2017. 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. (U.S. Marine Corps photo by Sgt. Allison Lotz)