private static bool IsCruiserWithCrewOver2000(SpaceWarship ship)
 {
     return ship.ShipClass == WarshipClass.Cruiser
            && ship.Crew >= 2000;
 }
 private bool IsDestroyerInQuickReactionFleet(SampleData data, SpaceWarship ship)
 {
     return
         ship.ShipClass == WarshipClass.Destroyer
         && data.Fleets[SampleData.QuickReactionFleet].Ships.Contains(ship);
 }
 private SpaceWarship GetSmallerShip(SpaceWarship ship1, SpaceWarship ship2)
 {
     return (ship1.Crew < ship2.Crew)
             ? ship1
             : ship2;
 }