FILE - In this Jan. 12, 2014 file photo, Denver Broncos quarterback Peyton Manning calls an audible at the line of scrimmage against the San Diego Chargers in the second quarter of an NFL divisional playoff football game in Denver. Folks who watched the Broncos' NFL playoff win over the San Diego Chargers on television Sunday couldn't help but notice how often, and loudly, Manning used the code word "Omaha" as he barked signals. Greater Omaha Chamber of Commerce president and CEO David Brown said he wants to explore the possibility of hiring Manning, one of the sporting world's top pitchmen, to shoot a promotional ad for Omaha. (AP Photo/Charlie Riedel, File)