ADVANCED COURSE Marine Corps Sgt. David R. Allen, left, and Chief Warrant Officer Kevin F. Kersey, right, perform first aid on Lance Cpl. Austin J. Sona during an advanced water survival course on Marine Corps Air Station Cherry Point, N.C., Aug. 5, 2014. Allen is a water survival instructor assigned to Marine Wing Headquarters Squadron 2, Kersey is a utilities officer assigned to Marine Wing Support Squadron 274 and Sona is a water support technician assigned to Marine Wing Support Squadron 274. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 736762-P-UKO73-982.jpg Photo Gallery