I Wanna Be Around Taxi : Season 4 Episode 11

Louie becomes scared of nuclear war after hearing someone talk on Donahue, and he sets up a bomb shelter in the garage. He schedules a weekend drill with Jeff and Tony in tow, but finds he's too ""soft"" to survive if war really broke out, since he is unwilling to throw Jim (who has stowed away in a radiation suit) out of the shelter.