workforce and the rate of growth of that workforce. (j) Briefings and reports (1) Report on future periodic reinvestigations, insider threat, and continuous vetting Not later than 90 days after the date of the enactment of this Act, the Secretary of Defense shall, in consultation with the Director of National Intelligence and the Director of the Office of Personnel Management, submit to Congress a report that includes the following: (A) An assessment of the feasibility and advisability of periodic reinvestigations of backgrounds of Government and contractor personnel with security clearances. (B) A plan to provide the Government with an enhanced risk management model which reduces the gaps in coverage perpetuated by the current time-based periodic reinvestigations model, particularly in light of the increasing use of continuous background evaluations of such personnel. (C) A plan for expanding continuous background vetting capabilities such as the Installation Matching Engine for Security and Analysis to the broader population, including those at the lowest Tiers and levels of access, which plan shall include details to ensure that all individuals credentialed for physical access to Department of Defense facilities and installations are vetted to the same level of fitness determinations and subject to appropriate continuous vetting. (D) A plan to fully integrate and incorporate insider threat data, tools, and capabilities into the new end-to-end vetting processes and supporting information technology established by the Defense Security Service to ensure a holistic and transformational approach to detecting, deterring, and mitigating threats posed by trusted insiders. (2) Quarterly briefings Not later than the end of each calendar year quarter after the date of the enactment of this Act, the Secretary of Defense shall provide the Committees on Armed Services of the Senate and the House of Representatives a briefing on the progress of the Secretary in carrying out the requirements of this section during such