PBS ranch series receives some local advice Cowboy life BY RAY WESTBROOK AVALANCHE-JOURNAL Cowboys riding hard after cattle in the heat of a Big Bend summer in 1867 could find relief from their work only by falling exhausted at night onto their crudely fashioned camp site. It was life hanging by a thread, with neighbors perhaps 25 miles away and no way to reduce the distance by speed. Today, the scene has been repeated south of Alpine, except a TV camera followed the cowboys wherever they rode. Producers of a reality show about 19th century ranching, which will air nationally...