It's technical advertising and probably they wrote it as part of a bigger project which a customer paid them to do it. If you wrote the white paper which was used to teach the officer. The officer is going to assume technical competence and better trust you on other technical aspects.

Intellectual curiosity? Similar to Nobel Laureate economist Paul Krugman opined about special relativity's impact on interstellar interest rates?

Preemptive education of the next politician who wants to knock out a "hostile" satellite.

Probably to present at the Space Symposium which would have been in a week. Gotta release it now so it looks like you did something in FY 2020.