Columbia subject headings:
Nuclear facilities--Security measures--United States.
Nuclear weapons plants--Security measures--United States.
United States. Dept. of Energy--Security measures.
Harvard subject headings:
Nuclear facilities--Security measures--United States
Nuclear weapons plants--Security measures--United States.
United States. Department of Energy--Security measures.
Princeton subject headings:
Nuclear facilities--Security measures--United States.
Nuclear weapons plants--Security measures--United States.
United States. Department of Energy--Security measures.