Question: This flight, the first of a reused spacecraft made the pilot of the mission qualified under the rules of the U.S. Air Force and the Fédération Aéronautique Internationale a what?
Sentence (from "X-15 Flight 91"): Walker landed the X-15 about 12 minutes after it was launched, at Rogers Dry Lake, Edwards Airforce Base, in California.
Relevant evidence: No