Marine Corps Systems Command Sgt. Maj. Allen Goodyear, left, looks on as Gen. Eric M. Smith, middle, assistant commandant of the Marine Corps, congratulates Col. Kirk D. Mullins (right) on his retirement from the Marine Corps after 31 years of faithful service. The ceremony was held at Marine Corps Base Quantico’s 395-acre Transportation Demonstration Support Area on Sept. 29, 2022. Mullins was instrumental to the development, acquisition and fielding of the ACV, designed and built to replace the Corps’ legacy AAVs, which have been in service since 1972. - Marine Corps Systems Command Sgt. Maj. Allen Goodyear, left, looks on as Gen. Eric M. Smith, middle, assistant commandant of the Marine Corps, congratulates Col. Kirk D. Mullins (right) on his retirement from the Marine Corps after 31 years of faithful service. The ceremony was held at Marine Corps Base Quantico’s 395-acre Transportation Demonstration Support Area on Sept. 29, 2022. Mullins was instrumental to the development, acquisition and fielding of the ACV, designed and built to replace the Corps’ legacy AAVs, which have been in service since 1972.