Cases
Kentucky Train Collision with Disk UFO, 2002
Paintsville, Kentucky -- At exactly 2:47 a.m. on January 14, 2002, while working a coal train enroute from Russell, Kentucky to Shelbiana, Kentucky, our trailing unit and first two cars were severely damaged as we struck an unknown floating or hovering object.
I know it was 2:47 because my watch froze, and to this day shows that time.
Along with my watch the entire electrical systems on both locomotives went haywire. Approaching a bend near milepost 42 in an area referred to as the Wild Kingdom, for the many different types of animals spotted there, my conductor and I saw lights coming from around the way.
See more (external link) 
https://www.ufocasebook.com/kentuckytraincollision.html