That edge is the main reason why no U.S. soldier has been killed by hostile aircraft since the Korean War, and no U.S. pilot has been downed by an enemyplane since the Vietnam War.
There he met a woman whose voice he instantly recognised: Ellen Margaret Graves, the radar operator who had been guiding his plane towards formations of enemy aircraft for the past two years.
The Clementine II, Kinetic-Kill Anti-Satellite and Military Space Plane programs are the technological seed corn for such crucial capabilities as space-based missile defenses, neutralizing enemy satellites and having prompt, reliable and inexpensive access to and use of space.