Even as the fighting continued, Marines and KSC personnel were hauling fortification materials towards Bunker to consolidate the precarious foothold. For a while, enemy mortars unleashed a heavy fire against the newly won position, but by 0230 Company B was able to report that enemy shelling had stopped and that the objective was in friendly hands. A new fire fight broke out at 0345 between a small force of enemy soldiers occupying a draw forward of Bunker Hill and Marines nearby. The exchange of fire continued for nearly two hours, but short of harassing the Marines on Bunker Hill the enemy did not launch a counterattack. Dawn on 12 August revealed that thus far in the Bunker Hill fighting 1 Marine of Company B had been killed and 22 were wounded. The earlier diversionary attack on Siberia had resulted in only one Marine casualty, the wounding of the platoon commander, Second Lieutenant James W. Dion. Personnel losses were kept to a minimum by the well-organized medical support and the efficient service of medical and evacuation personnel. A forward aid station was established in the vicinity of the Company E CP. Casualties that were not ambulatory arrived at this two-bunker installation usually by hand litter, other wounded men were transported in armored personnel carriers, U.S. Army tracked vehicles similar in appearance to the Marine LVT, that had accompanied the diversionary unit and were part of the Panmunjom rescue force stationed in the area of COP 2 on the 3/1 left flank. Wounded Marines were examined immediately. Minor injury cases were treated and discharged; more seriously injured personnel were given emergency treatment and evacuated. Movement to the rear was accomplished by ambulance jeeps. Helicopters, landing only 30 yards from the station, flew out the critically wounded. A sandbag-protected squad tent was used to house casualties waiting to be examined. This emergency aid station closed down on 13 August, when action in the right battalion sector diminished. Even though the remainder of the morning of 12 August was practically free of any retaliatory attempts by the Chinese against Bunker Hill, the Marines occupying the new position were not idle, for they anticipated an immediate and severe reaction for capturing the hill. Quickly, but methodically, the company dug in. At noon, regiment passed to 3/1[180] the responsibility for Bunker Hill and operational control of Company B. Consolidation of Hill 122 continued until about 1500, when the Marines were forced to put down their entrenching tools and grab their rifles instead. The Chinese had suddenly launched an intense mortar and artillery attack against the hill. Defending Marines expected to see enemy soldiers start up the western slopes at any minute.