Answering the door
A couple of the comments about a firing port in the door made me chuckle. Do you remember the scene in "Josie Wales" where g'ma was commenting on how religious her son was? "See all of the crosses cut in the doors and window shutters".
Wish the climate was more moderate here. It sounds like a great idea.
The weak, and those unwilling to make the struggle, soon resign their liberties for the protection of powerful men or paid armies; they begin by being protected, they end by being subjected. Louis L'Amour