The News on 6 aired this story May 7, 2013
A defibrillator vest is saving lives in Oklahoma. It's designed for people who have a weak heart or survived a heart attack. One Oklahoma man says the LifeVest saved his life twice.
It's been around for a few years now, but doctors say many heart patients don't even know it exists.
Two months ago Michael Hopkins went to the doctor because he was having trouble breathing.