AgaliareptX

So about the Imgur mascot...

understand geometry in 3D space

This is an underrated one that I don't think enough people mention when it comes to the career. Controllers like to say "you either can do the job or you can't" and at least when it comes to passing the academy this was one of the biggest factors to me. The academy designs the problems/simulations so that things are constantly coming at you from different directions at different speeds and if you can't grasp in your mind how things are going to happen and think 5 steps ahead you're going to have a tough time (at least on the Terminal side).

Not Fisher Stevens?