U.S. Army Guardsmen from the the Texas Army National Guard (TXARNG) 449th Aviation Support Battalion, prepare to fire their 5.56 mm. M16A2 rifle during weapons training at Fort Hood, Texas, on May 13, 2006. The 449th ASB Guardsmen are preparing to deploy to Iraq as part of Task Force Mustang, the deployment name for the TXARNG 36th Combat Aviation Brigade, 36th Infantry Division. (A3606) (U.S. Army photo by SGT. Huey Kehl) (Released)