Question: When did the plane that the Vought XF8U-3 Crusader II was designed to compete against enter service with the U.S. Navy?
Sentence (from "McDonnell Douglas F-4 Phantom II"): Proving highly adaptable, it was also adopted by the U.S. Marine Corps and the U.S. Air Force, and by the mid-1960s had become a major part of their air wings.
Relevant evidence: No