Barkevious Mingo was back at Cleveland Browns practice on Saturday watching from the sideline. He’s a lucky young man. Yes the rookie linebacker and first-round draft pick probably will miss the rest of the preseason with a bruised lung. But consider this: He could have been killed by one more hit in Thursday’s game against the Detroit Lions. That’s not hyperbole. That’s a medical opinion. After Mingo had suffered the bruised lung another shot to his chest could have proved fatal Dr. Clark Fuller director of thoracic surgery at Saint John’s Health Center in Santa Monica Calif. told The Plain Dealer. Fuller didn’t treat Mingo but he said: “The chest cavity is an area where you could bleed to death and nobody ever sees a drop of blood on the ground.”