U.S. Marines with 1st Battalion, 3rd Marine Regiment,

U.S. Marines with 1st Battalion, 3rd Marine Regiment, 3rd Marine Division, go over flight manifest before boarding a CH-53E Super Stallion aircraft during Assault Support Tactics 4, as part of Weapons and Tactics Instructors Course 1-19 at Forward Operating Base Laguna, U.S. Army Yuma Proving Grounds, Ariz., Oct. 9, 2018. WTI, a seven week training event hosted by Marine Aviation Weapons and Tactics Squadron 1, emphasizes operational integration of the six functions of Marine Corps aviation in support of a Marine air-ground task force. This year, Marines and Sailors with the Special Purpose Marine Air-Ground Task Force Crisis Response-Central Command 19.1 served as the command element for WTI. (U.S. Marine Corps Photo by Sgt. Justin Huffty)