My son is almost 2 and you can bet that I'll tell him what he needs to do to achieve this. [1]
[1] - To be a USAF pilot, your best bet is to bust your ass in high school and be both a student and an athlete and secure one of the coveted congressional endorsements to the U.S. Air Force Academy, where you must bust your ass and hope for a flight slot. Similar route for the Navy and USMC: U.S. Naval Academy.
The process to become a U.S. Army helicopter or fixed-wing pilot is a lot easier. Pursue a slot as an Aviation warrant officer. Successfully complete basic training, WOCS, and flight school. You don't need a college degree but it helps. The key is age: the doors close at around 32, so you have to start early.