Staff Sgt. James G. Huffman, High Mobility Artillery Rocket System secretary chief, and Gunnery Sgt. David C. Amaya, HIMARS staff noncommissioned officer in charge, flanks Brig. Gen. Richard C. Zilmer, commanding general of the Marine Corps Air Ground Combat Center, during the Combat Center?s first experience of HIMARS in action Sept.16. The HIMARS Marine detachment out of Fort Sill, Okla., came to fire off 60 rockets in the Combat Center?s training area. - Staff Sgt. James G. Huffman, High Mobility Artillery Rocket System secretary chief, and Gunnery Sgt. David C. Amaya, HIMARS staff noncommissioned officer in charge, flanks Brig. Gen. Richard C. Zilmer, commanding general of the Marine Corps Air Ground Combat Center, during the Combat Center?s first experience of HIMARS in action Sept.16. The HIMARS Marine detachment out of Fort Sill, Okla., came to fire off 60 rockets in the Combat Center?s training area.