Marine Corps pilots with Marine Aviation Weapons and Tactic Squadron One (MAWTS-1) and Marines with Echo Company, 2nd Battalion, 3rd Marine Regiment fly MV-22B Osprey aircraft during the marine expeditionary unit exercise (MEUEX) at Yuma, Arizona. MEUEX is part of Weapons and Tactics Instructors course (WTI), a seven week training event hosted by MAWTS-1 cadre. MAWTS-1 provides standardized 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.