Getty The Falcons have shored up their secondary by signing former Colts safety Ronnie Harrison The Atlanta Falcons ‘ preseason opener was cut short on Friday night after Detroit Lions safety Morice Norris suffered a worrisome head injury in the fourth quarter. The Falcons’ decision to end the game after Norris’ injury was heartwarming, but on Saturday, it was back to business for the team, as they quickly made a signing in the wake of this game. Preseason contests offer teams an avenue to find