Interesting re the names, predator/carnivore versus Echelon and FiveEyes.
See also:
PROMIS
http://www.fromthewilderness.com/free/pandora/052401_promis.html
Raw List of NSA Nicknames and Codewords
https://decryptedmatrix.com/raw-list-of-nsa-nicknames-and-codewords/