Diego and Elena Murillo kicked off Sunday with a breakfast of snow cones and popcorn. Next on the siblings' agenda: roping a steer. After watching a demonstration, Diego clambered up on a red barrel, grabbed a rope and twirled it over his head, flicking it through the air as his family cheered "Throw it, throw it!" The activities were part of the Cowboy Boot Camp, an attraction at the San Antonio Stock Show & Rodeo that drew a host of aspiring...Read full news