; 129 Stat. 1118). (11) Such other officials as may be determined necessary by the Secretary of Defense. (c) Program office (1) There is in the Cybersecurity Directorate of the National Security Agency a program office to support the Program by identifying threats to, vulnerabilities in, and remediations for, the missions and mission elements specified in subsection (d)(1). Such program office shall be headed by a program manager selected by the Director of the National Security Agency. (2) The Chief Information Officer of the Department of Defense, in exercising authority, direction, and control over the Cybersecurity Directorate of the National Security Agency, shall ensure that the program office under paragraph (1) is responsive to the requirements and direction of the program manager selected pursuant to such paragraph. (3) The Secretary may augment the personnel assigned to the program office under paragraph (1) by assigning personnel as appropriate from among members of any covered armed force (including the reserve components thereof), civilian employees of the Department of Defense (including the Defense Intelligence Agency), and personnel of the research laboratories of the Department of Defense, who have particular expertise in the areas of responsibility referred to in subsection (d). (d) Designation of mission elements of program (1) The Under Secretary of Defense for Policy, the Under Secretary of Defense for Acquisition and Sustainment, and the Vice Chairman of the Joint Chiefs of Staff shall identify and designate for inclusion in the Program all of the systems, critical infrastructure, kill chains, and processes, including systems and components in development, that comprise the following military missions of the Department of Defense: (A) Nuclear deterrence and strike. (B) Select long-range conventional strike missions germane to the warfighting plans of the United States European Command and the United States Indo-Pacific Command. (C) Offensive cyber operations. (D) Homeland missile defense.