 At different times rumors circulated that the bomb power was reduced by 2 times compared to the planned one as scientists were afraid of a self-sustaining fusion reaction involving the atmosphere and the ocean in the hydrogen reaction and subsequent oxygen burnout.Before the "Trinity" test in 1945, similar concerns had been expressed about the occurrence of an uncontrolled nuclear reaction in the atmosphere despite the contradiction of such a possibility to all known information about nuclear reactions.Just before that explosion, a young scientist who was nervous because of such fears was removed from the test site on the advice of doctors.