Welcome to Space 3D and the conclusion of our interview with space historian and policy analyst Dwayne Day.

Day is a senior program officer for the Aeronautics and Space Engineering Board of the National Research Council/National Academy of Sciences, where he has served as a study director on studies concerning NASA's aeronautics flight research capabilities, the planetary exploration program, the size of the astronaut corps, the threat of asteroids striking Earth, NASA workforce skills, radiation hazards to astronauts on long duration spaceflights, U.S. Air Force astrodynamics standards, and other projects. He previously served as a program officer on the Space Studies Board and served as an investigator for the Columbia Accident Investigation Board. He has also written extensively on the history of American satellite reconnaissance.

In this episode, we focus on two fascinating stories about the intersection of Skylab with the National Reconnaissance Office... and wrap things up with the question we’ve all wanted to ask: has all this work with declassified history ever resulted in a midnight visit from some Men in Black?