In 1990, the army's civil defense corps—precursor of today's Home Front Command—handled distribution.
Our civil defense program is also a key element in the protection of our country.
The Office of civil defense, however, is solely responsible for the validity and accuracy of the information in the handbook.
I'd heard sirens like these before -- they test the civil defense sirens at noon on Tuesdays.
An indispensable part of our continental security is our civil defense effort.
A civil defense official brought up a Geiger counter, but no matter how he shook it and rapped on it, it refused to click.
The civil defense organization is staffed at all administrative levels in the country.