Six-year-old Karter Thorpe was in the back seat as his grandma "Mimi" drove through the Lowe's parking lot in Franklin, Virginia, recently. That's when he saw a man lying on the ground. He thought the man was sick, and told grandma to stop and help, but Mimi knew Karter had an "active imagination" so she kept on going. For some reason, Karter wouldn't let it go. He started screaming, "He's hurt! He's hurt! You have to go back!" So she turned around and drove back, just to prove the man he saw was perfectly fine.

                                                                                                                                  CBS News
Then she saw a pair of feet behind a truck. Sure enough, the man was lying on the ground. He was gasping for air. She stopped the car and ran to his aid, calling 911. Another passerby performed CPR on the man until paramedics arrived to take him to the hospital. Grandma Mimi never got his name until his family reached out to her on Facebook. They said he suffered a heart attack and would have died except for Karter's quick response. Mimi recalled, "Karter would not take no for an answer. He was determined and I'm glad he was."