I was astounded by this film, really astounded. It captures the feeling and the irrational prejudices of the time. Despite that Catherine was responsible for all the mathematical calculations to get John Glenn and subsequent astronauts up into space, she was forced by the prejudices of the time to run for 45minutes to find a'coloured ladies bathroom to relieve herself. The three women in the film did overcome prejudice but only after a long struggle. This is a film everybody ought to watch.