An Iowa teenager jumped into an icy lake on Saturday to save an 83-year-old man and his dog.  17-year-old Joe Salmon managed to pull Thomas Lee and his dog Cooper to safety with the help of four passersby.  Lee's jeep fell through the ice of East Okoboji Lake in Dickinson County, Iowa, on Saturday, trapping him and his dog. Lee was reportedly traveling to his son-in-law's fishing shack when the accident occurred. Salmon, who was fishing nearby, leaped into the lake to rescue Lee after dialing 911. The teenager broke the rear window to rescue Cooper from the back of the jeep and returned to help Lee free his foot, which had gotten stuck in the car. Four other people helped Salmon pull Lee to safety.  "I want to thank the people who helped and the store that took the dog in and dried him off," Lee told the De Moines Register.