Ashton Carter gained prominence within the defense establishment with his analysis of Reagans SDI program back in the day. He helped save taxpayers a ton of money and what would likely have been years of misdirected effort. https://111finalprojectnickh.voices....ts/document-2/
Ashton Carter, one of the most brilliant minds of the past century in the field of nuclear weapons, carried out a scientific assessment of Reagan’s Strategic Defense Initiative at the behest of the United States Congress. His findings, while not explicitly stating that the program cannot succeed, reveal a great many technical obstacles to its success. Furthermore, Carter states that the possibility of a complete comprehensive shield is “remote”.