There is a famous event with a large triangle craft in Ohio:
http://www.ufocasebook.com/trumbullcounty1994.html
Darn - I thought for sure it was a triangle - it was round. But witnessessed and followed by dozens of cops, 911 recordings, etc. Weird.
Here’s the triangle event I was thinking of. Illinois, police witnesses, etc.
http://www.ufoevidence.org/cases/case277.htm
Thanks.