NIGHT LIGHTS As seen through a night-vision device, U.S. Army soldiers prepare for a training mission as part of exercise Emerald Warrior near Fort Walton Beach, Fla., March 15, 2010. U.S. Special Operations Command personnel are conducting the 19-day training exercise, which provides troops with an opportunity to participate in realistic urban-warfare training scenarios at multiple sites along Florida's Gulf Coast. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 033946-R-YLI36-395.jpg Photo Gallery