Remember the Runaway Stabiliser drill on the 707 ?
Identify the emergency, stop the wheel - best to grab the one on the other side of the centre console, until they invented and installed a brake lever by the F/O's thigh ( no, grab the brake, not the F/O's thigh ), cut off the two hydraulic switches also on the centre console, then PULL THE CIRCUIT BREAKERS on the overhead panel.
On a training flight - simulators were still new and some checks were carried out on the real aeroplane - the Training Captain quietly ran the stabiliser nose down until the trainee caught on to what was happening, everything went to plan, tho' the aircraft started earthwards, and with the drill complete the crew then attempted to restore the hydraulic systems, which meant that the circuit breakers had first to be pushed in - except that the 'G' force being experienced was too great for the engineer to reach up above his head, and with both pilots pulling hard, and the engineer with both feet on the bottom of the intrument panel and a hand on each control column ( no mean feat in itself ) they managed to level out just above the water.
After that runaway stabiliser drills were only practised in the simulator.