Survivors of the once victorious KPA were in flight or in hiding, and, in either case, they were but disorganized and demoralized remnants. On 1 October there occurred an incident illustrating the state of KPA demoralization. A USAF T-6 Mosquito Forward Air Controller pilot dropped a note to 200 KPA soldiers northeast of Kunsan ordering them to lay down their arms and assemble on a nearby hill. They complied. The pilot then guided UN patrols to the waiting prisoners. The virtual collapse of the North Korean military caused General MacArthur on 1 October to order the USAF to cease further destruction of rail,highway, bridge, and other communication facilities south of the 38th Parallel, except where they were known to be actively supporting a KPA force. Air installations south of the 40th Parallel were not to be attacked, and he halted air action against strategic targets in North Korea. Loss of weapons and equipment in the retreat north from the Pusan Perimeter was of a scope equal to or greater than that suffered by the ROK in the first week of the war. For the period 23–30 September, IX Corps alone captured 4 tanks, 4 self-propelled guns, 41 artillery pieces, 22 antitank guns, 42 mortars, and 483 tons of ammunition. In I Corps, the 24th Division on one day, 1 October, captured on the Kumsan road below Taejon 7 operable tanks and 15 artillery pieces together with their tractors and ammunition. On the last day of September the 5th Cavalry Regiment captured three trains complete with locomotives hidden in tunnels. A few miles north of Andong advancing ROK forces found approximately 10 76-mm guns, 8 120-mm mortars, 5 trucks, and 4 jeeps, together with dead KPA soldiers, in a tunnel—all had been destroyed earlier by USAF napalm attacks at either end of the tunnel. At Uisong, ROK forces captured more than 100 tons of rice, other supplies, and most of the remaining equipment of one KPA division. The North Koreans had abandoned many tanks, guns, vehicles, ammunition, and other equipment because they lacked gasoline to operate their vehicles. After the UN breakout from the Pusan Perimeter, in the period from 26 September to 21 October 1950, seven survey teams traveled over all major routes of armored movement between the Perimeter line and the 38th Parallel, and also along the Kaesong-Sariwon-P'yongyang highway above the Parallel.