Tara Garner's children were collecting candy as the July 4 parade passed by, when they looked up and saw a deputy on a motorcycle, waving and talking to kids."I know you," one of Garner's sons said to Chris Pope, from the Davis County Sheriff's Office. "You came to my house on your motorcycle when my mom was having a heart attack."The deputy said, "I hope your mom's doing OK," and the children pointed to where she was standing, holding her 3-month-old baby.One week after giving birth, Garner got up in the morning and began brushing her teeth. Suddenly, she had horrible chest pain and her arms felt limp. The family called 911."Within a few minutes, we could hear sirens," said Garner, of Clinton. Pope arrived on the scene first, because he was already patrolling the area on his motorcycle. Instead of just trying to keep her calm while waiting for more help to arrive, he started treating her himself, using what he carried in his saddlebags."I attached a monitor to see what was going on with her heart rhythm," said Pope. "She was having a massive heart attack."