"A Mars space probe returns to Earth and brings with it a microorganism from the red planet. While transporting the microscopic alien life form by train, there is an accident and the microorganism is unleashed. Exposure to the alien virus forces four strangers (sic) into quarantine while government scientists rush to find a cure," according to the DVD sleeve's synopsis. Not exactly "four strangers", but: biochemist Stafford Morgan (as Sorenson), weighty John Goff (as Jack), busty Carol Irene Newell (as Jenny), weighty George 'Buck' Flower (as Hank), and rail-weary Ralph Meeker (as Charlie). If you fall asleep during this movie, your head will not explode. Trust me.
** The Alpha Incident (1978) Bill Rebane ~ Stafford Morgan, John F. Goff, Ralph Meeker
** The Alpha Incident (1978) Bill Rebane ~ Stafford Morgan, John F. Goff, Ralph Meeker