Decatur, Ala., native Sgt. Andrew Sivley, a sniper team leader with the Vilseck, Germany-based 1st Squadron, 2nd Stryker Cavalry Regiment, attached to the 82nd Airborne Division's 2nd Brigade Combat Team, scans some nearby rooftops through the scope on his weapon while providing security for officials visiting a water treatment plant in Baghdad's Sadr City neighborhood.