The 1998 tornado in Peachtree Corners, GA. I was in the closet under the stairwell of my townhome and the whole house was shaking on the foundation. I was clinging to the stairs and having an intense conversation with God. Fortunately I only lost the roof, privacy fence and storage shed. And yes it sounds just like a freight train.
Was stuck in a cage halfway down an ICBM silo for three hours and mid way through they called an EWO exercise.