US Defense Secretary Robert Gates sacked the air force's civilian secretary and chief of staff, blaming them for two major blunders that shook confidence in US control over its nuclear arsenal. Gates said "a substantial number" of generals and colonels also face possible disciplinary action as a result of an investigation into a mistaken shipment of fuses for nuclear weapons to Taiwan. Gates asked for and received the resignations of General T. Michael Moseley, the air force chief of staff, and Air Force Secretary Michael Wynne.