English: U.S. Marines assigned to Marine Aviation Weapons and Tactics Squadron 1 use a torque wrench to assemble a 2.75-inch rocket configured with Advanced Precision Kill Weapon System II, a hydra 70 rocket motor and M282 High Explosive Incendiary Multipurpose Penetrator Warhead during ordnance building and preparation in support of Weapons and Tactics Instructor course 2-18 at Marine Corps Air Station Yuma, Ariz., March 28. WTI is 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 and 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 Lance Cpl. Lisa Collins/Released) VIRIN: 180328-M-ZV042-0001