Bill Parcells has stepped down as head coach of the Dallas Cowboys. Parcells has coached for the Giants, Patriots and Jets before becoming the head coach of the Cowboys in 2003. "I am retiring from coaching football," Parcells said in a statement. "I want to thank Jerry Jones and Stephen Jones for their tremendous support over the last four years. Also, the players, my coaching staff and others in the support group who have done so much to help. Dallas is a great city and the Cowboys are an integral part of it. I am hopeful that they are able to go forward from here."