The only place "watchers" appears in the NWT is the 4th chapter of Daniel. However, in the older Reference NWT "watchers" appears in Judges and Jeremiah too.
I wasn't aware of this idea or understanding of watchers until maybe a few years ago. I still don't know how to assess it butI believe that as long as we deviate away from obvious or direct demonic influence that we are spared their influence. I can't provide scriptural reference except for Job that they have limits and if they want to play, they can but it has restraints.
Now that I have said that, it opens a can of worms that I can't even begin to account for, Restraints according to what power? Well, God obviously to us. The nay sayers don't respect even our minimum level of agreement. Is there nothing stopping the wicked from completely overhauling us? I say nay. There is God's power and force and it is his choice as to how he uses it. The watchers' assume a liability toward the perverted side because we have no way of determining a good angel from judged. Except that holy spirit may guide us.
I am so wasted on this world and it's garbage that I am a stone's throw from anarchy. Let this be said, if you are FBI or CIA or the other letter groups, we will stay in line and we will live according to God's restraint, but don't be mistaken, our God will kill you if you are not within his fold. I say this because we are being watched. Maybe you didn't see it before. They move in our midst and pretend they are one of us. "us"
They aren't. They learn our language and that is easy enough. They are not of our sort and they will be judged as unholy.