On Aug. 19, I thought my life had changed forever and, in many ways, it did. By change, I mean I thought I was losing my dad to a sudden attack while he was shopping in Kmart. One minute, he was shopping for a bike, and the next minute, he blacked out and was lying on the floor, due to a dangerously low heart rate. There were no warning signs. In the blink of an eye, he could have been gone. There was a nurse in the store shopping. When she realized my dad wasn’t OK, she helped him and stayed with him until the paramedics arrived.