There is an even scarier story about Heisenberg, from late in WW2. From https://journals.sagepub.com/doi/full/10.1177/0096340211433019 https://journals.sagepub

There is an even scarier story about Heisenberg, from late in WW2. From https://journals.sagepub.com/doi/full/10.1177/0096340211433019 https://journals.sagepub.com/doi/full/10.1177/00963402114330... : > In November 1944, the OSS learned that Heisenberg planned to visit Switzerland the next month. Former major league baseball catcher and then OSS officer Moe Berg was dispatched to Zurich with orders that “Heisenberg must be rendered hors de combat” (out of action) if Heisenberg gave evidence that the German bomb effort was close to completion. Apparently Berg alone was to decide whether or not to kill Heisenberg (Powers, 1993: 391–392). > With a pistol in his pocket, Berg attended a lecture by Heisenberg, waiting for some sign of an advanced German atomic bomb program. Heisenberg offered no such signal and therefore survived. Instead, Berg reflected on his own “uncertainty principle” in regard to killing Heisenberg, a reference to the scientist’s most prominent contribution to the theory of quantum mechanics (Powers, 1993: 398–399). > Later that week, as the Battle of the Bulge turned to Allied advantage, Berg attended a dinner given for Heisenberg and heard him lament Germany’s coming loss of the war. This appeared to clinch the case that Heisenberg could not be part of a successful atomic bomb project and effectively ended any further US interest in killing him (Powers, 1993).