 OSHA says heat is the leading cause of weather-related deaths in the U.S. The new rule would apply to about 36 million workers in indoor and outdoor work settings. Sanford police report two 17-year-old brothers apparently drowned yesterday. The two had gone to Springvale's Holdsworth Park to swim. When they didn't return home, Sanford police were called. A search found the two teens dead in the water.