@Quix The first article is from 2015, the next in 2014, then other UFO articles are from 1976 and 1977.
The NSA is supposed to follow possible UFO sightings and they keep them secret, that is what they do. the NSA is an intelligence agency and they are not going to publish everything they know.
It appears people who write these articles, dump on the NSA and our other intelligence agencies, hoping "whistle blowers" (suggesting what the government is doing is wrong), will tell what they are investigating and what happened. And, one guy says the NSA is "torturing" people. "They’ve been spying, putting whistle blowers in jail, torturing, and giving immunity to people who commit these kinds of crimes, how much trust can you put in a government like that?"
A "whistle blower" should be put in jail as the NSA, CIA emplyees, are required to sign a document they will not release secrets. Our family member who worked with CIA agents, and the most secret material in government, was sworn to secrecy for 20 YEARS after leaving the pentagon. There are still some secrets he cannot reveal after all these years.
The NSA certainly has "spies" just like the CIA has "spies". That is part of their business. Having family members working for/have worked for the CIA and NSA, these conspiracy reports are made by people who are on the fringe, looking for something to advance their conspiracy minds.
There may be, probably are, UFOs, so be it. It doesn't affect my life. Since I am a prepper extraordinaire, I am not worried one bit if there are UFOs. When Christ returns for his church, I will ask Him about UFOs.