NBC = nuclear, bacteriological, chemical

nuclear, bacteriological, chemical (NBC) defense

nuclear, biological and chemical weapons (NBC)

nuclear, biological, and chemical (NBC) reconnaissance

bacteriological weapon(s)

biological weapons (bacteriological weapons)

collective NBC protection

collective NBC protective equipment

deployable NBC analytical laboratory

hazardous levels of NBC contamination

NBC attack

NBC defense

NBC environment

NBC event response team

NBC fire

NBC protection company

NBC protection system

NBC protective posture

NBC reconnaissance

NBC release other than attack (ROTA)

NBC release other than attack

NBC samples

NBC shelter

NBC situation

NBC weapons

NBC defense troops

bacteriological aerosol

bacteriological agent

bacteriological bomb

bacteriological bomb operation

bacteriological bomb vehicle

bacteriological bombing

bacteriological bombing mission