BABIL, Iraq - Sgt. Samuel G. Rodriguez, an AH-64D Apache maintenance chief with Company B, 1st Battalion, 229th Aviation Regiment, 21st Cavalry Brigade, originally from Arlington, Texas, conducts pre-flight checks before a mission over Contingency Operating Site Kalsu April 12, 2011. The 229th &quot;Tigersharks&quot; are conducting counter indirect-fire missions around Kalsu in support of the 3rd Armored Cavalry Regiment. US Army photo by Staff Sgt. Garrett Ralston (110412-A-8856R-021)