An Iraqi soldier pulls security with U.S. Army Staff Sgt. Anthony Hernandez, 2/32 Military Transition Team, assigned to Task Force 1-35 Armor, 2nd Brigade Combat Team, 1st Armored Division, during the search of canals in Tahwilla, Iraq, on July 30, 2008. Extremists have been utilizing concealment provided by the intricate canal system to emplace improvised explosive devices under the cover of night.