 Marine Tactical Air Command Squadron 18 (MTACS-18) was activated on 1 September 1967 at Da Nang, Republic of Vietnam, as Headquarters and Headquarters Squadron 18 (H&HS-18), Marine Air Control Group 18, 1st Marine Aircraft Wing.From activation until April, 1971, H&HS-18 participated in 89 operations conducted in the 1st Marine Aircraft Wing (1st MAW) Tactical Area of Responsibility within the Republic of Vietnam.During this period the Squadron assisted in the conduct of 215,715 fixed wing sorties, 7,584 KC-130 missions, and 1,225,015 helicopter tasks.