Maybe everyone knows this, but I'd be remiss if i didn't share with my Glock friends. My security/surveillance guy gave me a great tip. I just did the install today. You take 3 inch or 3 1/2 inch coarse thread #8 drywall screws and replace all the short screws in all exterior door deadbolt recepticles, the long screw goes thru the door frame into the 2x4 used to frame out the door frame, making it extremely hard to kick the door. I used a Porter Cable impact driver, stripped nothing and did the whole house in no time, did door to gun room, deadbolt on safe room/ master closet, etc. I also have cell phone in master closet, a Glock 35 vertically mounted on a magnet with laser and small numbers on closet door where wife is to fire if she's locked in and someone shakes the door. 1, 2 , 3 4.