It doesn't matter whether you get a specific example or not. The point is that if you go up to the necessity standard, then there will more than likely be less information going to the national security agencies. Whether it's example A, B, or C, it doesn't really matter. There's likely to be less information moving. The viability of the act....
You would have to test. You would have to talk to the non-national security agencies that are probably most vulnerable to understanding what national security necessity is for those receiving it.