The Federal Civil Defense Authority was established in the United States Department of Defense (DOD), by DOD Directive 5105.43, May 5, 1972.
It coordinated and directed federal, state, and local civil defense
program activities, including fallout shelters
; chemical, biological, and radiological warfare
defense; emergency communications and warning systems; post-attack assistance and damage assessment; preparedness planning; and government continuity.
By EO 12148, July 20, 1979, retroactive to July 15, 1979, pursuant to Reorganization Plan No. 3 of 1978, effective April 1, 1979.