It is a professional group of about 100 analysts, scientists, researchers, technical ops, etc. Satellite and photo interp.
The chief of the shop was interviewed last year on their methodology and how they keep us all safe.
The organization in question is fairly familiar, I believe they have credence; it is known as the "United States Air Force."
LINK: Report on the Air Force's NAIS and North Korean monitoring
I was in the Air Force for 20 years. I can assure you, not everyone has credence. I recall one James Clapper. If that dude says anything, I automatically dont believe a word of it. Since I have very little trust in government, lets wait for more honorable men like Mike Pompeo and Donald Trump to comment on it. I learned from my Vietnam experience, not to be too trusting in government.
American in Davao