Well, That's One Way To Not Secure A Perimeter

The Detroit News: Pontiac gunman missing after hours-long standoff

The county’s Special Weapons and Tactics Team arrived at the home and unsuccessfully tried to contact the suspect.

Deputies believed the man was still inside the home but entered the home at 3:09 p.m. and discovered that the man had left.

Either he had already left before they arrived, which seems likely, or somebody really goofed and left the criminal an easy way out.

I'm thinking Clancy failed to take the boys and surround the house.