Noe Aguilar, a tow truck driver for Action Towing & Auto Repair in Pasco, looks for a place to attach tow chains to a large concrete barrier stuck under the wheels of a semitrailer Thursday in Pasco. The driver, Donald Dean Weber, 63, of Valley Springs, Calif., was pulling out of a repair facility at 1115 Oregon Avenue when he drove over the barrier. The truck ground to a halt because the drive wheels became jammed by the tipping empty trailer. Both northbound lanes were blocked until the truck drove away after Aguilar and a co-worker pulled the concrete block free. No one was injured and the trailer appeared to have only minor damage.