As much as I've read about history or at least how much I think I have read I was surprised even stunned when at the 27:00 minute mark they showed how production used a "midget" to climb into the wing to attach the outer wing to the wing structure assembly containing the engines. I knew they used slighter people, many of whom were women to assemble or complete assemblies that contained tight or restrictive spaces, but had not seen them use as they said midget's; apparently everyone had a part in the logistics chain.