Never been to Roswell myself but the tall grey description keeps coming up and thats what gets me. You'd expect most people to describe the classic short grey, that's basically burned into popular culture at this point. So when someone independently says tall, that carries a bit more weight imo.
We had a sighting over the Peak District back in 2017, completely different context obviously, but the figure my mate described near the treeline was tall, thin, moved wrong. Hard to explain "moved wrong" but anyone who's seen something like this knows exactly what I mean.
Anyone got photos or video from the 2019 Roswell incident? Even blurry phone footage would be worth analysing. And were there multiple witnesses or just the one person? That detail matters a lot before I'd take it further.