Article Photos: Oklahoma football: New offensive philosophy debuts alongside Sooners' quarterback Trevor Knight 65/72

The Warbirds airplane group perform before the college football game where the University of Oklahoma Sooners (OU) play the University of Louisiana Monroe Warhawks at Gaylord Family-Oklahoma Memorial Stadium in Norman, Okla., on Saturday, Aug. 31, 2013. Photo by Steve Sisney, The Oklahoman