Clarification

That's what I remember was that section, I remember a discussion about how the government could buy a single patented invention then use that invention in some top secret skunk works project without worrying about an infringement claim. Although this makes me wonder if they don't pay and just not tell the companies what it's for.

It's sort of like the following story. My wife's family is from Lincoln county Nevada. Area 51 is in Lincoln county and it's a very small county (population wise that is). Business and professional taxes are levied by the county on any business operating within the county. The county was aware that there was commercial activity taking place at Area 51 airbase by sub-contractors and began making inquires with the Air Force about lack of payment of the required taxes. As you may be aware the US government denies there is a facility called Area 51 or any facility located in the area generally known to be Area 51. Well the end result of the counties inquiries was that the they received a check for a bit more than a million dollars with no identifying information on where the check came from or what is was for. The county presumed it was the back taxes due and dropped the issue (probably after receiving a few unofficial phone calls saying the same).