FIREBASE SAENZ, Helmand province, Afghanistan - Cpl. Matthew Suiter, a Union City, Ore., native and the assistant gun chief for Gun-3, Alpha Battery, lies in his hammock reading a book in some of his downtime. The battery Marines, belonging to 1st Battalion, 12th Marine Regiment, can often be found hanging out within the sandbag walls they built on the gun line. The Marines feel their individual area on the gun line is their deployment home, often refusing to leave the area even though air-conditioned tents have been made available.