Sam/Rhodey
I bet. I looked at her spaceship once, and I've flown fighter jets of all sort, and studied all about them. It was incredibly foreign, but amazing at the same time.
About seven years ago now, I was shot out of the sky by our version of Vision. My suit exploded and malfunctioned (it's a lot like Tony's, in case you didn't know. he made both of them). I fell out of the sky pretty hard. Tony made these braces for me, that connected to my spine, and allowed me to walk and connect to my suit, but I don't have them here. And if I could find away to walk without them... that would be miraculous.