军事 Marine USMC MARSOC 马润 马骚 （3）A U.S. Marine Corps UH-1Y Venom aircraft assigned to Marine Aviation Weapons and Tactics Squadron One (MAWTS-1) prepares to land in support of a UH-1 battle drill during Weapons and Tactics Instructor (WTI) course 2-19 at Yuma Proving Ground, Arizona, April 5, 2019. WTI is a seven-week training event hosted by MAWTS-1, which emphasizes operational integration of the six functions of Marine Corps aviation in support of a Marine Air Ground Task Force. WTI 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 Cpl. Sabrina Candiaflores)