With each Soldier comes a specific duty, task and military occupational specialty. However, some Soldiers bring additional skills that contribute to their wartime mission. "Right now, my mission here is culvert denial -- keeping the insurgents from putting bombs under the culvert, which are tunnels under Iraq's highway system and roadsides," said Spc. Ryan Thomas, a combat engineer with 3rd Platoon, 573rd Clearance Company, 1st Engineer Battalion. "A lot of them have been poorly denied already."