Four-year-old Angelina Knox, from New Orleans, dances on an NFL logo at the NFL experience Wednesday, Jan. 30, 2013, in New Orleans. The city will host the Super Bowl XLVII football game Sunday. (AP Photo/Charlie Riedel)

Richard Anderson, of New Orleans, plays the trombone as the Kinfolks Brass Band marches along the Riverwalk in New Orleans, Friday, Feb. 1, 2013. The Baltimore Ravens will play the San Francisco 49ers in the NFL football Super Bowl on Sunday. (AP Photo/Elise Amendola)

People photograph the Roman numerals for NFL Super Bowl XLVII as they are silhouetted against the morning sky Friday, Feb. 1, 2013, in New Orleans. The city will host the football game between the San Francisco 49ers and Baltimore Ravens. (AP Photo/Charlie Riedel)

Baltimore Ravens quarterbacks Joe Flacco (5) and Tyrod Taylor walk down a hallway for NFL football practice at the team's training facility in Owings Mills, Md., Friday, Jan. 25, 2013. The Ravens are scheduled to face the San Francisco 49ers in Super Bowl XLVII in New Orleans on Sunday, Feb. 3. (AP Photo/Patrick Semansky)

San Francisco 49ers linebacker Larry Grant (54) warms up with teammates during practice on Wednesday, Jan. 30, 2013, in New Orleans. The 49ers are scheduled to play the Baltimore Ravens in the NFL Super Bowl XLVII football game on Feb. 3. (AP Photo/Mark Humphrey)

Baltimore Ravens head coach John Harbaugh and San Francisco 49ers head coach Jim Harbaugh speak during a press conference at the Ernest N. Morial Convention Center on Friday, February 1, 2013 in New Orleans, LA. The Ravens will face the 49ers in Super Bowl XLVII on February 3. (Ben Liebenberg/NFL)

NFL Network's Deion Sanders dances with singer Beyonce on set on Radio Row at the Ernest N. Morial Convention Center on Thursday, January 31, 2013 in New Orleans, LA. (Ben Liebenberg/NFL)

Quarterback Colin Kaepernick #7 of the San Francisco 49ers kisses his bicep during an interview with NFL Network's Deion Sanders during the Super Bowl XLVII Media Day at the Superdome on Tuesday, January 29, 2013 in New Orleans, LA. (Perry Knotts/NFL)

A general view of the the Superdome in New Orleans on Tuesday, January 29, 2013. (Perry Knotts/NFL)

Singer Beyonce performs during the halftime press conference at the Super Bowl XLVII media center at the Ernest N. Morial Convention Center on Thursday, January 31, 2013 in New Orleans, LA. (Perry Knotts/NFL)