It’s an unfortunate story that we hear every summer: young children getting left in cars in the sweltering heat. Fortunately for a Gaithersburg child, a Good Samaritan was nearby and rescued her from a hot car. On Friday, Tom Hruska was looking for a parking spot in a garage at the Rio Entertainment Complex, but had to go all the way to the sun-soaked roof to find an opening. As he left his car, he heard a baby crying and saw the three-month-old in a Volkswagen Beetle. Hruska ran to a nearby gym to call 911, then hurried back to...