Well, I have dogs - very protective dogs. You also said we'd be awoken by a crash. Besides that, my wife's an extremely light sleeper, and I'm a super protective father and husband, firearms at the ready - at least a 12 gauge and a .45 within arms reach - always vigilant and ready to go terminator on any and all who may threaten my family. That being said, the intruder is a dead man, pure and simple.