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
The East Is Red (1965 film) Japanese Aggression), the subsequent overthrow of the National Government of the Republic of China on Mainland China by the PLA in the decisive phase of the Chinese Civil War, and the founding of the People's Republic on October 1, 1949. Singers in the film include Wang Kun, Tseten Dolma, Hu Song Hua and Guo Lanying. The East Is Red (1965 film) The East Is Red (), is a 1965 Chinese film directed by Wang Ping. It is a "song and dance epic" dramatizing the history of the Chinese Revolution and the Communist Party under the leadership of Mao Zedong, from