1. This Directive reissues DoD directive 5100.76, May 17, 1977 (hereby canceled) to continue, in restructured form, the Physical Security Review Board, and modify the reporting criteria previously set forth. It outlines the authorities, responsibilities, and functions relative to the formulation of world-wide uniform policy, standards, and procedures for the physical security of nuclear weapons, devices, reactors, and materials, and conventional arms, ammunition, and explosives in the possession or custody of DoD Components. 2. This Directive also authorized the issuance of DoD Manual 5100.76-M, "Physical Security of Sensitive Conventional Arms, Ammunition, and Explosives," and appropriate supplements, consistent with the requirements of DoD Directive 5210.41, September 12, 1978.