Solid core doors with double deadbolt. Dog-preferably a Poodle, Bichon, Westie, or other yappy little dog that will alert the whole neighborhood. Security system hooked to cell phone. I can turn lights,stereo, TV, etc on or off from Bumfug Egypt. Can see every room in the house on the smartphone. (and no, that system isn't really very expensive.) Know your neighbors. Work with them. Benelli M-4 loaded with 00 buck.