What Sighting/Event Opened Your Mind to the Possibility the Phenomenon is Real?

For me, Roswell.

Way too many witnesses, interviews, deathbed confessions, changing government explanations, universal similarity’s between the stories, it’s a lot.

I know there’s more out there, and I’m curious what other events really resonated with people. Made you either believe, or at least open your mind to the possibility it’s something substantial.

Please, include any videos or sources you have. I’m sure there’s a lot of people here who are interested in finding out more information.