In USA, Waltham, MA:
Shiny disk-like (?) object?
https://www.youtube.com/watch?v=hGO0DgygPIU

In USA, Chelmsford, MA:
Could very well be a reflection, but still a weirdly looking piece.

https://www.youtube.com/watch?v=KVVbGPLcubc

In Lithuania, Siauliai:
The classic cigar shaped ufo photo?

https://www.youtube.com/watch?v=RU2JIpvgF8c