Niven and Jerry Pournelle.
Yes, and I think at least one company included a machine gun as part of the bomb shelter supplies. My father didn’t fo to parochial school, but he was taught to pray while ducking under desk.
Yes, a great one. One of my favorites. Neighbors are having a dinner party at the home of the family who has a bunker. Air raid sirens go off during dinner. The host family heads down to their bunker and tells everyone else to go home. The other neighbors don’t have bunkers and think they’re going to die unless they get into the host’s bunker, but the bunker is only big enough for one family. Human nature ensues.