@krapp thanks for asking. I have no real evidence, except that he worked closely with military and you cannot be against your feeding hand. See interview: http://www.youtube.com/watch?v=iF6hOMY2vxA So obviously he is pro USAF, but that didn't mean he needed to portray the US Government in a good light in StarGate SG-1. He showed the USAF in a very good light though. He also supports the Greenpeace (Sea Shepard) and Charity.