SIMI VALLEY, Calif. - The filming of the remake of the 1943 classic "My Friend Flicka" has resulted in fatal injuries to two horses, the American Humane Association said Wednesday. A quarter horse tripped during a rodeo scene and broke one of its back legs April 11 at the Blue Sky Ranch in Simi Valley, said Sara Spaulding, a spokeswoman for the Humane Association. The horse was put down after a veterinarian on the set of "Flicka" examined the horse and determined the injury was untreatable, she said. Spaulding said an investigation was being conducted to determine whether guidelines were...