What are your thoughts on non-electric home defense tools?

My uncle has really solid doors everywhere it counts and then puts the appropriate gate latches on and even uses crossbars. He says it's so you can't break through the door easily if you get trapped. He has a 10' Flag about 50' up the county tried to get him to take down and he told 'em bring body bags. He's a vietnam vet in a wheelchair and I love him dearly. The county backed off.