Most often, the door frame breaking is what allows them to gain entry. The wood frame around the door splits apart. The Door Security Pro reinforces wood door frames (and the hinges) to eliminate the possibility of the door frame ever failing.
How to Reinforce Doors: Entry Door and Lock Reinforcements Three simple upgrades to improve door security. You know after reading some of the hide your guns book, and how this horrific thing happened to an ex marine after katrina,