On the discussion of the merits of a flight attendant/ crew chief; let me add a practical need for an engineer/mechanic to be included as part of the crew. Since the rigs we fly to are Waaay! out there, an occasional minor problem that arises can often be fixed on the rig. Since the deck is fouled with our big beast, and the nearest platform may be 50-80 miles away, not having to send for maintenance can save the rig hours, if not more than a day.