::Hmm, it's definitely produced by the TNANG, but I'm not sure if that qualifies as something created under the auspices of the State of Tennessee or USAF.  If the person who created it did it while the unit was Federalized, then it would definitely be, not sure otherwise though.  It's a fairly rarely used device, and the TNANG's site kind of sucks, so it doesn't have any images.  I've seen it on a number of ANG publications though.  Regardless, I think it's pretty easy to give a fair use justification as an identifying badge of a military organization, even if it isn't public domain. Much better than a picture of an airplane that the TNANG doesn't even fly any more, which is what is currently used on the page.