Kellie Pickler will sing the national anthem on Sunday (Oct. 21) in Dallas as the Minnesota Vikings play the Cowboys in a game to be televised by the Fox network. Her performance follows a three-night tour with Rascal Flatts that begins Thursday (Oct. 18) in Birmingham, Ala., with dates Friday (Oct. 19) in Atlanta and Saturday (Oct. 20) in Greenville, S.C. Jason Aldean returns to the Rascal Flatts tour at the Oct. 25 show in Kansas City. Pickler sold out a Tuesday night (Oct. 16) concert at the North Carolina State Fair in Raleigh.