Shortly after, we were informed that this never happened.
Here are the spookiest answers:
Empty boats
US Navy photographer here.
Sometimes they look like they got loose and no one looked for them.

Sometimes they looked disgusting like someone lived in them until they couldnt.
Theyd look at them and they wouldnt even raise their weapon or unsling it.
They would just start laughing at the US soldiers.

Then the US guys would shoot them.
Part of the memorial is dedicated to a veterans cemetary.
It was actually kind of peaceful, to be honest.
I followed the sound and noticed a light glowing through the vines and brush of a large tree.
I pushed aside the brush and what I saw nearly took my breath away.
It was an old, weathered headstone with a large cross etched into the marble.
Only the cross was glowing a bright, vivid blue, like a neon bulb.
Needless to say, I freaked the fuck out.
I screamed like a scared little girl and sprinted back to the parking lot.
As I suspected, in the light of day it was a completely mundane headstone.
There was no name, only the aforementioned cross.
The humming was gone, too.
I eventually returned to my normal shift, but never again experienced anything out of the ordinary.
Definitely sounded like a woman.
The instructors went out from their compound, did some checks but didnt find anything.
They said its not the first time they had units out there calling in to report the same thing.
BossAVery
A phantom smoker
Is a dude vanishing spooky enough?
I looked to my partner to mention it but when we looked again he was gone.
There are a number of bays in Engine Room Lower Level with narrow passages that pass through the center.
I could hear his footsteps as he walked around a corner and out of sight.
Three problems: 1.
He was wearing utilities, an older, light blue blouse and dark navy slacks.
Nobody had utilities anymore.
They had been phased out three years earlier.
He wasnt actually there.
I wrote it off as sleep deprivation, but Ill admit it shook me for a while.
While I was there, I met a sailor who had previously served on my ship.
In Engine Room Lower Level.
I wish I could have gotten a picture of the look on my face.
Im sure it was the definition of disbelief.
Hes convinced he heard Russian.
No sound associated with the event other than normal sounds of the location.
SnoGoose
This is my dads story.
After he was done in Vietnam he soon stationed at an air force base in Greenland.
These blizzards are intense.
They had people die literally 20 meters from shelter because they got lost in bad weather and froze.
He said for about 5 months every time they locked down for weather they would hear horrendous screaming outside.
Everyone was accounted for so they didnt risk sending anyone out to investigate.
They wrote it off as an animal.
However, every time this was heard, the engine room would be wrecked.
No animals, no people, no anything was ever seen entering or leaving those buildings.
Then one day it just stopped.
This was not something they just shrugged at.
This facility, beyond military function, served as a base for a lot of civilian research as well.
There was a full investigation using all manner of scientists, engineers, and specialists.
They came up with no satisfactory explanation for what was happening.
I do not believe in the paranormal nor did my father.
This is the only spooky pop in story he has from 22 years in the service.
No one knows what happened.
It was very strange in ever way.
That said, I spoke to my mom.
She told me a couple things I missed.
After one of these occasions the U2 in the shop had all its electronics turned on.
Many of the systems in this plane were special built for this air frame and this particular crews mission.
These systems were complex and archaic.
It wasnt a simple matter of hitting power buttons and flipping switches from off to on.
Another time three barrels of hydraulic fluid vanished and were never found.
They theorized it was a polar bear but, if it was, its coincidental timing was extremely uncanny.
They were never able to reproduce these errors in a controlled manner.
Shortly after F22s and 16s were scrambled and could not intercept the object.
It disappeared into the night.
We saw this go down from our flightline.
Shortly after, we were informed that this never happened.
phdaemon
Piano notes
Navy.
When I was in groton CT, for basic enlisted submarine school.
I was roving the barracks at night.
I had a UI(under instruction), so I was showing him the ropes.
What to check and and how to check.
It was mainly fire extinguishers and secured doors.
Mind you everyone was asleep and it was 0200 in the morning.
Well I decided to go and see if I remembered how to play the piano a little.
We shrugged it off as our imaginations running wild.
compaq2598
Submarine ghosts
Submariner here.
There are few things as unnerving as wondering about the engine room from 2330-0530 alone on watch.
When the boat is largely shutdown in port it becomes a very quiet place.
We saw him walk past maneuvering on his way to shaft-alley.
What we didnt expect was him to literally run into the maneuvering area a few minutes later.
The man was pale faced, and breathing heavily.
He slumps into the EDO chair.
A few tense, and silent, moments go by.
Were on pins and needles.
He finally opens his mouth and tells us about the fucking ghost in shaft-alley.
Swears a sailor passes by him as hes sitting on a trash can in shaft alley.
His first response was to call out to the guy, see who it was.
But then he realized this guy isnt dressed right.
He describes what this guy was wearing, the old WWII naval uniforms.
So he quickly gets up to catch up to the guy, and he does.
Catches up to him all the way aft.
The guy turns towards the Senior Chief.
Looks right at him.
Then turns away and literally walks through ass end of the boat.
Its now that the Senior Chief decides its time to leave shaft-alley, and promptly does so.
Swears up and down that he knows what he saw.
I sure as hell wasnt about to leave maneuvering that night to find out for myself.
He was infantry so being in the field and out of missions for multiple weeks wasnt uncommon.
One night while sleeping in a fighting position he dug, he felt something nibbling at his feet.
But being in the field with little sleep he chalked it up to just seeing things.
dee_swoozie
Cemetery ghost
I worked in Arlington National Cemetery while I was in the army.
The Tomb Guards always talked about seeing or just hearing soldiers marching some nights.
He answered from behind me.
When I looked back, the other soldier was gone.
Also, seen some weird creepy lights and St. Elmos fire near the old Waugoshance Light.
Compasses and radios all quit, radar and GPS wouldnt work either.
We stayed at Rawley Point Lighthouse and the Sherwood Point Lighthouse.
I KNOW that Sherwood Point is haunted….. derpsalot1984