By Jacob Carpenter
Naples Daily News
CAPE CORAL, Fla. — Kristen Shiner arrived on the shooting scene Wednesday afternoon to find a door-to-door salesman face down on a driveway.
Thinking the suspect had retreated into his Cape Coral home, Shiner, an off-duty Collier County sheriff's sergeant, tried treating the dying victim.
Off-duty Fla. cop stops gunman after deadly shooting