This is CRM.
The High and the Mighty (1954)
Scene: The aircraft has an engine out and a fuel leak. The Captain's plan is to ditch in San Francisco bay, while still under control. The FO (John Wayne's) plan is to fly inland over the built up area to the airport to land - he thinks they may have just enough fuel, the Captain disagrees.
They have asked the Navigator to calculate the amount of fuel, and he is taking his time...