The Cowboys have signed 26-year old safety Brandon Underwood to a reserve/future contract.  Underwood last played in the NFL back in 2010 with the Green Bay Packers.  Underwood has played in 23 games in his first two years in the NFL and he has 21 tackles and 3 tackles for a loss.  It never hurts to give a guy like Underwood a chance to revive his career.