Lawyers for NJ Transit filed suit in U.S. District Court seeking a permanent restraining order and asking the court to fine the locomotive engineers union over a June 17 job action that forced the agency to cancel hundreds of trains and temporarily suspend service. The suit filed on Friday asks the court to grant a permanent injunction prohibiting the Brotherhood of Locomotive Engineers and Trainmen from staging future job actions and asks for unspecified monetary damages to cover costs NJ Transit incurred. The court granted a temporary order on June 19 restraining the union from any further j…