SEA KNIGHT FIRE U.S. Marine Corps Gunnery Sgt. Joshua D. Wallace fires an M-240 machine gun from a CH-46E Sea Knight helicopter over the Pacific Ocean, Dec. 4, 2011. Wallace is assigned to Marine Medium Helicopter Squadron 268, which serves as the 11th Marine Expeditionary Unit's aviation combat element. Unit members boarded the USS Makin Island, USS New Orleans and USS Pearl Harbor in San Diego, Nov. 14, 2011, beginning a seven-month deployment to the western Pacific Ocean and Middle East regions. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 709766-M-KYP84-184.jpg Photo Gallery