ATLANTA -- NFL owners approve policy allowing players to stay in locker room for national anthem, but they must stand if on field.PREVIOUS COVERAGE FOLLOWSThe NFL approved a new owner for the Carolina Panthers, passed a rule to eject players who hit with their helmets, and took steps to spice up the kickoff.Still to be resolved: a much more contentious issue.What to do, if anything, about players who kneel during the national anthem?"We recognize with our visibility and the interest itself that it's taken a life of its own," Dallas Cowboys owner Jerry Jones said Thursday."We ask the world, 'Don't turn your head.