 Together they evaded VC formations surrounding the hill at Ngok Tavak and marched eastward towards Khâm Đức.About halfway between Ngok Tavak and Khâm Đức, White and his column climbed a mountain where they cleared the jungle to create a landing zone, and called for helicopters to evacuate the survivors.A flight of CH-46s later arrived and, in a scene that would be repeated at Khâm Đức, chaos descended on the allied formation as Nung and U.S. personnel fought their way onto the helicopters.