Looks like we found someone who believed it was financially necessary for the manufacture of the shuttle to be spread across the country.

If you want to put an idea out there, permissive licenses are the most likely to promote it. Any individual or organization can use it without restrictions (or restrictions that aren’t unpalatable to most). So if what you’re trying to promote is an idea, a technique, or a standard, this type of license allows it to have the greatest reach.