Oct 3, 2016 FIRE BURT BASE, Calif. - Cpl. Eduardo Osorionunez, a field artillery canoneer with 1st Battalion, 11th Marine Regiment, fires the M777 Howitzer during a CH-53 day battle drill exercise at Fire Base Burt, Calif., Oct. 1, 2016. The battle drill was part of Weapons and Tactics Instructor Course (WTI) 1-17, 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. Photo By: Cpl. Abraham Lopez