Beating the heat turned deadly for two teenagers spending the weekend at North Texas lakes. 
First responders want the tragic drownings to serve as a reminder of the dangers of large groups and inexperience at the lake.  On Saturday, 15 year-old Darrion Powell got into trouble at Joe Pool Lake at a birthday celebration for his sister.  The teen swam out to far when he either got tired, or got a cramp.  His body was recovered a short time later.  Powell would have been starting his sophomore year at Dunbar High School in Fort Worth in a few weeks.  Yesterday, a second tragedy, as the Dallas lake search and rescue team recovered the body of a 19 year-old man who apparently swam too far out and drowned.  His name has not been released.