 The B-52 had been above Hanoi at over , when Major Tuân launched two Atoll missiles from 2 kilometres, claiming to have destroyed one of the bombers flying in the three-plane formation.Other sources argue that his missiles failed to hit their mark, but as he was disengaging, a B-52 from a three-bomber cell in front of his target took a hit from a SAM, exploding in mid-air