The Cassandra Crossing (1976)
Director: George P. Cosmatos
Writer(s): Robert Katz, George P. Cosmatos
Starring: Sophia Loren, Richard Harris, Martin Sheen, O.J. Simpson, Lionel Stander, Ann Turkel, Ingrid Thulin, Lee Strasberg, Ava Gardner, Burt Lancaster, Lou Castel, John Phillip Law, Ray Lovelock, Alida Valli, Stefano Patrizi, Thomas Hunter, Fausta Avelli, Angela Goodwin, Carlo De Mejo, John P. Dulaney, Andrea Esterhazy, Renzo Palmer, Teresa Rossi Passante, Michael Staudt, Adam Strasberg, David Lee Strasberg, Maurizio Streccioni, Thomas Williams
Synopsis: Passengers on a European train have been exposed to a deadly disease. Nobody will let them off the train so what happens next?
Release Date: February 9, 1977 (USA) | Length: 129 min | Genre: Drama, Thriller | Certificate: R
Note: I did not find the name of the black marine guard at the beginning of the film.