I had a dream about this circumstance the other night. In my dream I knew I just passed by terrorists who were up to no good, but when I called to report them I could not explain how I knew they were terrorists.
That's about how I feel.
Most folks have no idea what is really going on. I mention some of the threats we discuss here to others and they have no idea that all this is going on. Most take what I say seriously, some just dismiss it, to their own peril.
maybe it would help at such times to refer to specific observables . . .
The way their eyes were scanning the situation;
their body language;
the look in their eyes, their bulging dress etc.
Not a very sure thing but better than
"I just felt it."