A few things....
If you can afford it, get a thermal scope/optic. Don't let these parasites get close to you. Don't live or build a home in a place with high ground above it. Make the immoral murdering sniper's job as difficult as possible. Make sure your home has COVER within it, not just concealment. Never trust a federal agent. Period. If they try to force you into helping them, tell them to fuck off. Then do everything you can to protect yourself and your family, for they will seek revenge for your failure to help. Go public about it too as much as possible, so they cannot destroy you as they did the Weavers.