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 The term NBC has been replaced by CBRN (chemical, biological, radiological, nuclear), with the addition of a new threat, radiological, meaning radiological weapon.
College football on television
NBC has an exclusive contract with Notre Dame, which began in 1991. Since that time, NBC has carried nationally all of Notre Dame's home games, paying at least $9 million per season for broadcast rights. Recently, Notre Dame's ratings have been down significantly due to relatively poor play and because NBC does not telecast a game every week as CBS and ABC do (when Notre Dame plays away, NBC has no college football, and thus the network has no set regular schedule); Notre Dame games on NBC drew less than half the ratings that CBS and ABC averaged for their college football games in 2008. NBC was long the home of the annual "Bayou Classic" between Grambling State University and Southern University at the Mercedes-Benz Superdome, but NBC has since moved the game to its NBCSN cable network. The game is well known for its "Battle of the Bands" between the schools at halftime.