JOINT BASE ELMENDORF-RICHARDSON, Alaska -- Marines assigned to Marine Air Control Squadron-1 discuss their participation in Exercise Northern Edge 11 at a three-dimensional air defense radar and communication satellite site here June 14, 2011. Soldiers from Company C 307, 59th Signal Battalion at Joint Base Elmendorf-Richardson, Alaska, helped the Marines set up the site. (U.S. Marine photo/Cpl. Marionne T. Mangrum)