sentences:  Julianne Hough, who partnered with two-time Indy 500 winner Hélio Castroneves to win "Dancing with the Stars", sang the national anthem.Jim Nabors returned to sing "Back Home Again in Indiana" after an illness prevented him from doing so in 2007.1992 Winter Olympics women's figure skating gold medalist Kristi Yamaguchi, the season six winner of "Dancing with the Stars", served as the honorary starter and wave the green flag.