The Superdome, where the NFL Super Bowl XLVII football game between the San Francisco 49ers and Baltimore Ravens will be played, is seen at sunset Friday, Feb. 1, 2013, in New Orleans. (AP Photo/Charlie Riedel)

Photo by: Charlie Riedel

The Superdome, where the NFL Super Bowl XLVII football game between the San Francisco 49ers and Baltimore Ravens will be played, is seen at sunset Friday, Feb. 1, 2013, in New Orleans. (AP Photo/Charlie Riedel)