Emergency responders applied tourniquets to many of those injured by the explosions at Monday’s Boston Marathon. The device had fallen out of favor with the medical establishment, but the American military experience in Iraq and Afghanistan changed that.
Oscar Pistorius was a sports hero. Trooper Johnson is a member of the U.S. National Wheelchair basketball team and has competed in four Paralympic Games. He speaks with anchor Aaron Schachter about what Pistorius meant to the Paralympic movement.