Pfc. John Slick, India Company, 3rd Battalion, 7th Marines motorman assistant-gunner, provides security for the Trinity Christian Center, Yuma, Ariz., which was used to simulate an Iraqi village hospital for an assault training exercise April 15 that was a part of the Weapons and Tactics Instructor course. - Pfc. John Slick, India Company, 3rd Battalion, 7th Marines motorman assistant-gunner, provides security for the Trinity Christian Center, Yuma, Ariz., which was used to simulate an Iraqi village hospital for an assault training exercise April 15 that was a part of the Weapons and Tactics Instructor course.