"This theory is identical to a german movie from the 80's or early 90's. sorry i cannot remember the title. but basically people were conducting a fallout drill when an actual attack began and they were isolated in a fallout shelter. at some point a group of people looking for sanctuary came to the door pleading for help. to make a long story short, all an experiment. some people got greedy with resources. others became generous. some demanded that the refugees be allowed to enter, others threatened to kill people if they went to open the door. finally a woman atempted suicide, at which point the researchers stormed in and put an end to the experiment. "