Jeannette E. Powell-Campbell, assistant adjutant, Headquarters and Service Battalion, U.S. Marine Corps Forces, Pacific, flashes that familiar smile in her office here Jan. 30. Powell-Campbell is a retired master gunnery sergeant who is the adopted mother of three Cambodian children. - Jeannette E. Powell-Campbell, assistant adjutant, Headquarters and Service Battalion, U.S. Marine Corps Forces, Pacific, flashes that familiar smile in her office here Jan. 30. Powell-Campbell is a retired master gunnery sergeant who is the adopted mother of three Cambodian children.