and functional combatant commands in order to improve unity of effort among the combatant commands with responsibility for the Arctic region. (C) Identification of any capability gaps and resource gaps in the Arctic region and the formulation of plans to mitigate these gaps. (D) Identification of actions by foreign nations which increase the threat to United States interests in the Arctic region, and the formulation of plans to mitigate these actions. (E) Planning of military-to-military cooperation with partner nations that have mutual security interests in the Arctic region. (4) Discharge of duties Subject to the authority, direction, and control of the Assistant Secretary, in carrying out the duties specified in paragraph (3), the Deputy Assistant Secretary shall work closely with the following: (A) The Under Secretary of Defense for Research and Engineering. (B) The Director of the Defense Advanced Research Projects Agency. (C) The Director of the Missile Defense Agency. (D) The Director of the Strategic Capabilities Office (or any successor organization). (E) The United States Northern Command. (F) The United States European Command. (G) The United States Pacific Command. (H) The United States Strategic Command. (I) The United States Transportation Command. (J) The Alaska Command. 5. Report on infrastructure required to protect national security interests of the United States in the Arctic region (a) Report required Not later than one year after the date of the enactment of this Act, the Secretary of Defense shall submit to the congressional defense committees a report setting forth the requirements and investment plans for military infrastructure required to protect United States national security interests in the Arctic region. (b) Elements The report required by subsection (a) shall include the following: (1) A review of the operational plan for the protection of United States national security interests in the Arctic region, including strategic national assets, United States citizens, territory, freedom