WASHINGTON, Dec. 3 /PRNewswire-USNewswire/ -- Pinnacle Airlines pilots, represented by the Air Line Pilots Association, International (ALPA), and flying for Northwest Airlink and Delta Connection, showed their unity and resolve by voting to authorize their elected union representatives to conduct a lawful withdrawal of service if contract talks with management do not result in an agreement and both sides are released to economic self-help by the National Mediation Board.