NBC suit
An NBC (nuclear, biological, chemical) suit, also called a chemsuit or chem suit or chemical suit is a type of military personal protective equipment. NBC suits are designed to provide protection against direct contact with and contamination by radioactive, biological or chemical substances, and provides protection from contamination with radioactive materials and some types of radiation, depending on the design. It is generally designed to be worn for extended periods to allow the wearer to fight (or generally function) while under threat of or under actual nuclear, biological, or chemical attack. The civilian equivalent is the Hazmat suit. The term NBC has been replaced by CBRN (chemical, biological, radiological, nuclear), with the addition of a new threat, radiological, meaning radiological weapon.
Logo of NBC
The logo bug is also presented opaque in full color during the opening credits of a program, with the bug sometimes accompanied by ".com" text as a promotion for the network's website. Live finale episodes of "The Biggest Loser" continued to use the version with the NBC name titling below the peacock until its September 2009 conversion to HD, due to that program's standard definition production being based out of Burbank instead of New York City.