I lost my arm in an accidental crash on the air field. Gravity is still stronger than most of our attempts to overcome it. And humans are very fragile compared to a couple tons of metal and all of the earth.
It sounds like someone thinks you have talent and purpose. (Also, I didn't build the fighter jet I used to fly, building your own weapon is not a requirement for joining the Air Force... or any branch of the United States Military. Maybe it's okay if you didn't build your own weapon either.)