Paul Andrews, the president and CEO of the National Western Stock Show and Complex, will retire early next year, the organization announced Friday. Having taken the reins in 2010, Andrews’ tenure has been marked by significant changes for the Stock Show and the historic north Denver campus that has hosted it since 1906. In 2011, Stock Show leaders announced plans to move the annual event centered on animal shows, rodeos and a celebration of Western culture to a site in Aurora.