Hero who tackled Pennsylvania church gunman breaks silence: 'My pastor's life was in danger'

The horrifying scene made national headlines — an armed man walking up to the front of a church and aiming a gun at the pastor in the middle of his Sunday sermon. He pulled the trigger. The pastor flinched and dove behind the pulpit. Witnesses heard a click, and then a miracle. The gun didn't fire. Deacon Clarence McCallister, who was operating a camera that recorded the entire ordeal on video, sprang into action, jumping over a railing to tackle the gunman before he had a chance to take another...