Let's make this birthday one to remember.

86 years old (Born on December 23, 1937)

Astronaut involved in the 1975 Apollo–Soyuz Test Project, a 1985 Space Shuttle Discovery mission, and a 1985 U.S. Department of Defense mission aboard the Space Shuttle Atlantis. He was also the first pilot to fly the doomed Space Shuttle Challenger, carrying out a successful 1983 voyage aboard the shuttle.