Re: What license is he going for?
The article doesn't tell the whole story about licensing of works produced by US gov't workers. The GPL and Apache licenses are only applicable to use by citizens of other countries. All work produced by U.S. government officers or employees is not subject to copyright according to Section 105 of the Copyright Act. Google it.
I worked at a DOE lab for 11 years doing DevOps before the term was coined supporting code physicists and computer scientists who wrote codes supporting Stockpile Stewardship; so I know a thing or two about software licensing of U.S. gov't-produced codes.