DEPUTY SECRETARY OF DEFENSE
1010 DEFENSE PENTAGON
WASHINGTON, DC 20301-1010
March 13, 2020
Incorporating Change 4, February 20, 2024
MEMORANDUM FOR CHIEF MANAGEMENT OFFICER OF THE DEPARTMENT OF
DEFENSE
SECRETARIES OF THE MILITARY DEPARTMENTS
CHAIRMAN OF THE JOINT CHIEFS OF STAFF
UNDER SECRETARIES OF DEFENSE
CHIEF OF THE NATIONAL GUARD BUREAU
COMMANDERS OF THE COMBATANT COMMANDS
GENERAL COUNSEL OF THE DEPARTMENT OF DEFENSE
DIRECTOR, COST ASSESSMENT AND PROGRAM
EVALUATION
INSPECTOR GENERAL OF THE DEPARTMENT OF DEFENSE
DIRECTOR, OPERATIONAL TEST AND EVALUATION
CHIEF INFORMATION OFFICER OF THE DEPARTMENT OF
DEFENSE
ASSISTANT SECRETARY OF DEFENSE FOR LEGISLATIVE
AFFAIRS
ASSISTANT TO THE SECRETARY OF DEFENSE FOR PUBLIC
AFFAIRS
DIRECTOR, NET ASSESSMENT
DIRECTORS OF THE DEFENSE AGENCIES
DIRECTORS OF THE DOD FIELD ACTIVITIES
SUBJECT: Directive-type Memorandum 20-002 – “Missile Defense System Policies and
Governance”
References: See Attachment 1.
Purpose. In accordance with the April 4, 2019 Deputy Secretary of Defense
(DepSecDef) Memorandum, this directive-type memorandum (DTM):
• Establishes policy, assigns responsibilities, and prescribes procedures for
missile defense system (MDS) research, development, test, and evaluation;
procurement; and operations and sustainment in order to reduce risk and promote
MDS element transfers to the Military Departments while maintaining agility in
accordance with the 2019 Missile Defense Review.
• Updates missile defense governance to account for the elimination of the
Under Secretary of Defense for Acquisition, Technology, and Logistics and the
creation of the Under Secretary of Defense for Research and Engineering
