The Lost Missile

The Lost Missile is a 1958 science fiction film which was originally slated to be directed by William A. Berke, who was also executive producer of the film. The screenplay was cowritten by John McPartland and the longtime sciencefiction writer Jerome Bixby, and starred a young Robert Loggia. When William Berke suddenly died as filming was set to begin, his son Lester Wm. Berke who had come up with the original story took over the direction.

Meanwhile, at the Havenbrook Atomic Laboratory a thinly veiled reference to the Brookhaven National Laboratory in suburban New York City, Dr. David Loring and his assistant Joan Woods are preparing for their wedding later that day. Though both are in love, David is deeply committed to his work on a hydrogen warhead for the new Jove rocket, so much so that it has interfered with previous attempts at a wedding. Leaving work to go ring shopping, Davids irritation with time spent on it leads Joan to accuse him of prioritizing work over their relationship, and she calls off the marriage.With the missile blazing its path of destruction, a radar station on the DEW Line picks up its approach to the North American continent. Though a patrol jet diverted to intercept the missile is destroyed by the intense heat of its drive, the pilot captures a picture of it that is then transmitted to Conad, Continental Air Defense Command. An alert mobilizes jets from the Royal Canadian Air Force, which are unable to shoot it down and are destroyed in the attempt. ........

Source: Wikipedia