One of my colleagues at work, who happens to live in Deltona, has noticed the crime problem increasing in the last few years, asked for my thoughts for a gun around the home. He is slight of build, as is his wife. He has never shot a firearm before, and is in his late sixties. His wife also wants to have a gun available, and both have advised that they will spend time to learn how to use it. I have suggested a 20 gauge side by side under the keep it simple approach. They do not want a handgun. Any thoughts or other advice. No kids in home.