Marines keep an eye on the sky in Alaska
Marine 1st Lt. Corey Belton (right) a surveillance identification director and Cpl. C.J. Orelien (center), a data link coordinator, monitor a three-dimensional air defense radar while directing Air Force aggressor pilots practicing aerial combat during Exercise Northern Edge 11, June 14, 2011. The Marines are assigned to Marine Air Control Squadron-1 supporting the exercise from Coast Guard Base Kodiak, Alaska. (Navy photo/Petty Officer 1st Class Kim McLendon)