Season 3, episode 3, aired September 29, 1961.
It is a typical evening in a typical suburban community. At the residence of physician Bill Stockton, he enjoys a birthday party being thrown for him by his wife Grace and their son Paul. Also at the party are Jerry Harlowe, Bill's brother-in-law; Frank Henderson and Marty Weiss, Bill and Jerry's former roommates; and the wives and children of Jerry, Frank, and Marty. Suddenly, a Civil Defense announcement overheard by young Paul is made that unidentified objects have been detected heading for the United States. In these times, everybody knows what that means: nuclear attack.
As panic ensues, the doctor locks himself and his family into his bomb shelter. The same gathering of friends becomes hysterical and all of the previous cordiality is now replaced with soaring desperation; pent-up hostility, searing racism, and other suppressed emotions boil to the surface. Stockton offers his basement to them because the shelter itself has sufficient air, provisions, and space for only the Stocktons. The once-friendly neighbors break down the shelter door. Just then, a final Civil Defense broadcast announces that the objects have been identified as harmless satellites and that no danger is present. The neighbors apologize for their behavior; yet Stockton wonders if they have destroyed each other without a bomb.
***The cache you seek is small****