Christopher C. Miller

Christopher Charles Miller is an American retired United States Army Special Forces colonel who served as acting United States secretary of defense from November 9, 2020, to January 20, 2021. He previously served as Director of the National Counterterrorism Center from August 10 to November 9, 2020. Before his civilian service in the Department of Defense, Miller was a Green Beret, commanding 5th Special Forces Group in Iraq and Afghanistan, and later spent time as a defense contractor.