Detroit Lions players take a knee after safety Morice Norris was injured against the Atlanta Falcons during the second half of an NFL preseason football game on Friday in Atlanta. (Brynn Anderson | AP)ATLANTA — Detroit Lions safety Morice Norris was in stable condition after he was attended to for about 20 minutes and taken off the field in an ambulance Friday night in Atlanta, with the preseason game ending early. “Morice Norris is in stable condition and has feeling and movement in all his extremities,” the Lions said in a statement. The gunman accused of killing four people in New York City suspected he had chronic traumatic encephalopathy, or CTE — a degenerative brain disease often associated with football players. “At the end of the day we’re all out here as football players.