collection and retention of information concerning the qualification, assignments, and tenure of persons in the security cooperation workforce. (3) Implementation and management of the security cooperation human capital initiative under subsection (e). (4) Establishment of a defense security cooperation service, pursuant to regulations prescribed by the Secretary of Defense, acting through the Under Secretary of Defense for Policy and the Director of the Defense Security Cooperation Agency, to ensure that security cooperation organizations of the United States located at overseas missions possess the requisite personnel, and that such personnel possess the skills needed, to properly perform their missions, which shall include— (A) members of the armed forces and civilians assigned to security cooperation organizations of United States missions overseas who are performing security cooperation functions, regardless of funding source