I'll share something that I've never spoke about before.
I was leaving Afghanistan to fly back to the states back in 2012. Myself and a couple other dudes were staying in a couple of shack type rooms on Kandahar Air force Base next to where all of our equipment was staged for shipment. I woke up in the middle of the night and couldn't go back to sleep, so I decided to go to the MWR room and watch a movie.
It was around 2330 at night. There is a bench next to the MWR building were people smoke ect. There was a guy sitting at the bench watching something on his laptop. We were the only ones around, btw. I was "What's up, dude" and he didn't say anything or move an inch. I briefly thought to myself that was strange. I walked passed him about 20 feet to the MWR door and it was locked.
So I turned around to walk back to my room and he was gone. Total darkness, nothing moving anywhere. I literally stopped in disbelief. I just started looking around trying to understand what just happened and what I think I just saw. I didn't sleep much that night. Not that I was afraid of what happened, but it went against my thinking. I still try and debunk what I saw, but there simply isn't any explanation. There was nowhere for "it" to go.