A girl named Leah saved her younger brother after he started choking, giving him abdominal thrusts to help dislodge his airway, video shared by a police department in Texas showed. Leah's mother is an employee at the Lavon Police Department and she learned the technique from her mom, the department said. "This was a real life-or-death emergency, and Leah proved that age is no barrier when it comes to being a hero," the Lavon Police Department said, advising parents to teach children CPR and chok