FILE - In this Dec. 4, 2011, file photo, officials confer in the fourth quarter of an NFL football game between the Atlanta Falcons and Houston Texans in Houston. The NFL and referees' union reached a tentative agreement on Wednesday, Sept. 26, 2012, to end a three-month lockout that triggered a wave of frustration and anger over replacement officials and threatened to disrupt the rest of the season. (AP Photo/Dave Einsel, File)