SMOKE SIGNAL Army 2nd Lt. Tye Walden, left, relays radio traffic to Army Pvt. David Lemons during a combined arms live-fire exercise at the Georgia Garrison Training Center on Fort Stewart, Ga., Sept. 19, 2013. Walden, a platoon leader and Lemons, are assigned to the Georgia Army National Guard's 1st Squadron, 108th Cavalry Regiment. SHARE: Download: Full Size (0.07 MB) Credit: VIRIN: 437729-V-UWV21-113.jpg Photo Gallery