FILE - In this Sept. 25, 2011, file photo, officials confer in the third quarter of an NFL football game between the Denver Broncos and the Tennessee Titans in Nashville, Tenn. 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/Wade Payne, File)