In July, 1947, a UFO supposedly crashed during a thunderstorm near Roswell. The military investigated and identified wreckage as being from a "UFO" but then changed their story, claiming it was actually a weather balloon. Something similar happened in 1974 not far from Presidio, Texas in Mexico.
It's been a while since we have checked in on UFO activity around the country, it's still there, still happening literally all the time. New videos are posted almost daily it seems but still we hear bubkis from the Feds.