The argument is that the US government doesn’t have to follow US laws when interacting with US citizens outside of the US?

That’s especially dubious when “outside the US” is referring to a legally flimsy distinction like the international terminal of an airport which is on US soil and controlled exclusively by the US government.

There’s no way this isn’t going to be abused if allowed by courts.

Using ordnance survey maps is often like navigating a minefield. The ordinance survey maps are pretty helpful though.

RTGs aren’t used for power in earth orbit, because of the danger of releasing the radioactive contents on deorbit and because there’s enough sunlight here to make solar a much better option (lighter, cheaper).

RTGs are mostly used for the outer solar system where the sun is too dim to be useful.