National Security Agency
I heard once that something called the Central Intelligence Agency used to be scary, then this fish came along and ate ’em.
The National Security Agency, or NSA, is the governmental agency tasked with obtaining intelligence deemed important to the maintaining of national security. At one time they were only allowed to gain this intelligence from sources that originated outside the country.
The NSA maintains over 100 intelligence programs that do anything from listen for keywords in phone conversations to cameras that check height, build, and mannerisms to tag individuals for suspicious intentions. While these programs do not cover 100% of the population 100% of the time, you literally never know when “they” might be listening.
The agency answers directly to the National Command Authority and the President meaning that they have little to no oversight by Congress. This also means that a response from the Federal Police Forces or the Military can come very rapidly if it is deemed necessary and appropriate.