How available should the means of defending person and property be? Well check it out.
https://mashable.com/article/flamethrower-drone/?utm_source=social&utm_medium=facebook&utm_campaign=mash-com-fb-main-link&utm_content=tech
https://share.icloud.com/photos/0E4_BkxNiGGfq3zU1mu-US6wQ