So what I was wondering is, do the governments involved buy intellectual property rights to the technology that they are getting? Does it all belong to Lockheed (or whoever developed that subsystem) totally at the end?
Answer is: it depends. In a lot of cases, however, US Gov't has rights to quite a bit of the kit it buys. But I found out that some "proprietary" issues do not get released.
Huh? Yeah, it was a surprise to me twenty odd years ago ...