By Jacqueline Koch
Chattanooga Times Free Press
CHATTANOOGA, Tenn. — Jim Brock knows what it's like to point a gun at someone and pull the trigger. Mitchell Moore knows what it's like to be saved by an officer's bullet.
The two lethal incidents happened 17 years apart, but both police officers say sometimes use of deadly force is necessary.
Tenn. officers deal with aftermath of deadly force