Is there anything solid behind the Niagara Falls Men in Black story?

I’d start with the timeline, not the most unsettling details. Look for dated local news reports about the sighting, then see whether any coverage from the same period mentions the hotel visitors. A later retelling or an audio clip can be a lead, but it doesn’t establish when the recording was made or who is speaking.

If the account gives a hotel name or a precise date, those are useful checks. Without them, it’s hard to distinguish a documented incident from a story that grew more specific over time.

The reported behavior and appearance might be strange, but they don’t point to a particular explanation by themselves. A witness could be describing ordinary people in an odd way, or details could have been sharpened in retellings. Neither possibility proves what happened.

And even if the encounter happened as described, the leap from “they wanted to question witnesses” to “they were government agents trying to silence them” needs evidence of its own.

I’d keep the sighting and the hotel story as two separate questions. There could have been an unusual light or object in the sky, and there could have been a tense interaction at the hotel, without either one confirming the other.

The audio may help show what someone said, but unless the speaker and recording context can be independently established, it can’t carry the whole claim. Interesting account, not enough here to settle what the men were or why they were there.