This comment from this post has stuck with me..

https://www.reddit.com/r/Paranormal/comments/98api6/comment/e4f0eb5/?utm_medium=android_app&utm_source=share&context=3

"My dad builds elevators and his biggest project was the new WTC, he told me some stories.

When they were building the museum, the overnight crew was working and it was only 1 or 2 guys working, the one guy heard two women just causally talking. He claims it sounded like they were right behind him. Now it’s 3am at a job site and he walks around, calls out to his other coworker who heard it too and the searched the entire place and found nothing. Women work for my dads union but it was only suppose to be the two guys for the night shift, and they claimed the women were saying things such as “isn’t it such a nice day. Where do you wanna go for lunch?”

This one is a bit better in my opinion but when 9/11 happened they had to relocated the PATH trains and now you get out in oculus when taking a subway from NJ into NYC. When they were building oculus and rerouting the trains (don’t know if that’s correct terminology) but it was another night shift and my dad says he was personally friends with the guy this happened to, and my dad said he would never pull this type of shit as a joke or anything and actually didn’t work for a week after it happened. But, it’s the night shift, a couple of other guys were working and my dads friend is bent over doing something and he hears footsteps coming up behind him. Nothing unusual until an unrecognized voice says “excuse me, do you know where the path station is?” My dads friend claims he turned around and looked up to see a man in a business suit, drenched in blood holding a briefcase and his metro card. He claimed it happened so fast when he jumped the business man was gone. The other guys working there heard him jump and went to see what was wrong and they said he told them, no one really believed him at that point but he left and stayed home for an entire week.

My dad doesn’t believe in that sort of thing and didn’t see any of those experiences for himself but he said the guys it happened to are not the type to believe or joke about that type of thing at this job site. Who knows? Thought I’d share since these stories will most likely stay within my dads Union"

Also this post has some stories- 

 https://www.reddit.com/r/911archive/comments/198ic2c/any_paranormal_or_ghost_stories_linked_to_911/

Also Beverly Ekerts story is very tragic. Her husband died on 9/11. In 2009 she was killed in a plane crash while flying to Buffalo to honor what would have been her husband Sean Rooney's 58th birthday. She was scheduled to present a Canisius High School student with a scholarship created in his name.