Heart disease remains the No. 1 killer in the U.S., and the odds of survival depend on how quickly you get help.
Ernie Johnson and his brother were driving home from a fishing trip when an ordinary day took an extraordinary turn.
Along the side of the road, off U.S. Route 33 near Dublin, Johnson's chest pain turned into full cardiac arrest.
"All of a sudden, my eyes rolled up behind my head, and I fell directly backwards," Johnson said.
But it's who arrived to help him that Johnson said still stuns him.
"Then, all the miracles start to happen," he said.
Johnson collapsed in a grassy ditch, and Ann McElfresh pulled over. She is a patient support assistant at Dublin Methodist Hospital, and knew what to do.
"I shook him and yelled. He's in full arrest, and I started the most aggressive CPR I've ever done in my life," she said.
Then, more help arrived.
"He had a pocket mask and I looked at him and said, 'Just breathe. We're not counting. Breathe,'" she said.
First responders arrived at the scene, but Johnson was without a pulse.
"We've got a chance, and we never stopped. We never, ever stopped," McElfresh said.
By the time Johnson arrived at the emergency room, hope was fading.
"I didn't have a heartbeat for 30 to 45 minutes. I was literally dead," Johnson said.
But with time running out, Dr. Brian Weeks tried everything he could
to save Johnson.
"One of the new drugs … [Johnson] responded to that more than some of the other medications," Weeks said.
Johnson said he doesn't remember much about that day, but McElfresh said she won't forget.
"I think about it all the time. I just do," she said.
Johnson said he is loving his second chance at life.
"You know how we all run around and wonder if we're loved or not. I found out I was, and it's such a good feeling," he said.
Johnson was also transported to Riverside Methodist Hospital for hypothermia treatment, which cooled down his body to help save his brain.
Johnson was in the hospital for a month, went through rehabilitation, and is making a full recovery.