The Hunt for Red October (film) essentially revealed the use of gravimetry as a method of silent navigation in US submarines. Thought to be a billion dollar black project, the development of a full-tensor gravity gradiometer by Bell Aerospace was a classified technology at the time. It was thought to be deployed on only a few s after it was first developed in 1973. Bell Aerospace later sold the technology to Bell Geospace for oil exploration purposes. The last Typhoon-class submarine was officially laid down in 1986, under the name "TK-210", but according to sources was never finished and scrapped in 1990. The musical score of
Red or Black? awarded entry into the "Red or Black?" Millionaire's Club, normally reserved for those competitors who won the prize money themselves. Cowell stated in an interview during the broadcast week of the first series that he hoped a second series would go ahead, and that he had received three separate approaches from the United States to create an American version. Peter Fincham, ITV's chief programmer, said in October 2011 that "Red or Black?" would only be recommissioned for a second series if some changes were made to the format. Series 2 of "Red or Black?" was announced by Ant & Dec