Well.... the House Alarm would sound. They would know, that I knew they were there. Assumably the Alarm would be dialing (land line, or cellular backup). A rack of a shotgun would let them know I am armed. Diall 911 from Cell Phone. Hopefully, that combo would be enough for them to flee.
I would make my way to our Daughter's room, and stay put until Police Arrive.
If force came to force, one shot to center of mass should cease the Threat. If not, repeat.
:thumbup:
KillJoy