 Leading the evacuation effort were fifteen H-34 helicopters from HMM-163 supported by four UH-1B gunships of VMO-2.Panic-stricken South Vietnamese soldiers and civilians mobbed the evacuation helicopters and overwhelmed U.S. Special Forces troops as they abandoned the camp.This reached a point where the helicopters were so overloaded some Special Forces soldiers were forced to fire upon their allies to allow the helicopters to take off.