Gunnery Sgt. Joshua A. Peterson, one of the top shots for the Marine Corps Shooting Team, practices his aim by ‘snapping in’ at the Stone Bay Ranges aboard Marine Corps Base Camp Lejeune, April 13. The rifle he uses is specially weighted and requires endurance and careful attention to detail to achieve proper bone support. - Gunnery Sgt. Joshua A. Peterson, one of the top shots for the Marine Corps Shooting Team, practices his aim by ‘snapping in’ at the Stone Bay Ranges aboard Marine Corps Base Camp Lejeune, April 13. The rifle he uses is specially weighted and requires endurance and careful attention to detail to achieve proper bone support.