This government documentary short film depicts and explains proper procedures for functioning as a flight engineer on the B-29 bomber. Lieutenant Anderson is normally the co-pilot of this B-29, but as part of the readiness regimen for aircraft crews, he is being tested as the backup fight engineer. The actual flight engineer monitors his work, helping Anderson follow the checklists for flight preparation and takeoff. Throughout the 10-hour training flight, Lt. Anderson will be required to operate a multitude of engine controls and to monitor instruments on a variety of engine functions. Throughout the flight, his pilot and flight engineer watch over his work, correcting mistakes and reminding him of necessary actions.