Buddy Ebsen, Peter Graves, Arthur Kennedy, Raymond Massey, Mercedes McCambridge, Rip Torn, Louise Sorel, James Wainwright, Dabney Coleman, Joseph Campanella, Richard Eastham, Jim B. Smith, Tod Andrews, Maida Severn, Ivan Bonar
When the President's plane mysteriously disappears with him on board, it is left to the seemingly weak Vice President to try to avert a nuclear exchange with the Chinese.