One of the things a pilot had to be careful of was the trim wheel in the 707 & 727.  It was noisy, big, and had a flip out handle so the pilot could crank the trim wheel manually if the trim motor was shut down because of a runaway trim event.  What you had to pay attention to was that flip out handle.  If both pilots flipped their handles out, you had to remember to keep your knees away from the trim wheel.  You could hurt your knee if the wheel was being turned by one pilot and the other pilot forgot and had the knee near the trim wheel handle.

Ow! :'(

Later Boeing's got rid of the big trim wheel with better systems.

Hope you are all having fun flying.  I still love the 757, it's the nicest of all the planes I flew.  8-)