U.S. Marines with 3rd Battalion, 1st Marine Regiment, 1st Marine Division conduct a low-light air assault exercise during Weapons and Tactics Instructors Course (WTI) 1-18 at Twentynine Palms, California.

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.