Mr. Christopher Miller was  Performing the Duties of the Assistant Secretary of Defense (ASD) for SO/LIC and is former Deputy Assistant Secretary of Defense (DASD) for Special Operations and Combating Terrorism (SOCT). DASD Miller is responsible for overseeing the employment of special operations forces in counterterrorism, Military Information Support Operations (MISO), Information Operations, unconventional warfare, irregular warfare, direct action, special reconnaissance, foreign internal defense, counter proliferation, sensitive special operations, and personnel recovery/hostage issues as specified by the Secretary of Defense. Mr. Miller was sworn in as the DASD for SOCT on 6 January 2020.

From March 2018 through December 2019, Mr. Miller served as the Special Assistant to the President and Senior Director for Counterterrorism and Transnational Threats at the National Security Council (NSC). In this position, Mr. Miller was responsible for strategic level policy making and implementation, and support to senior NSC and White House leadership.

Mr. Miller was raised in Iowa City, Iowa and is a retired U.S. Army officer. He was commissioned as an Infantry officer in 1987 through R.O.T.C. with a Bachelor of Arts in History from the George Washington University. Mr. Miller began his military career as an enlisted Infantryman in the Army Reserve in 1983 and also served in the District of Columbia National Guard as a Military Policeman. In 1993, he transferred to Special Forces and served in numerous command and staff positions within the 5th Special Forces Group (Airborne).

Throughout his career, he served within other special operations organizations, culminating with command of the 2nd Battalion, 5th SFG(A). Mr. Miller participated in the initial combat operations in Afghanistan in 2001 and Iraq in 2003, in addition to numerous follow-on deployments to both theaters, and has extensive inter-agency and joint special operations experience. Upon retirement from the Army in 2014, Mr. Miller worked for over two years as a defense contractor providing clandestine Special Operations and Intelligence expertise directly to the Under Secretaries of Defense for Intelligence and Policy.

Mr. Miller possesses a Master of Arts degree in National Security Studies from the Naval War College and is a graduate of the Naval College of Command and Staff and the Army War College. Mr. Miller lives in Virginia with his wife. They have two grown daughters and a son in college.