My City Installed New Emergency Sirens Last Month. Yesterday I Learned What the Fourth One Means

About a month ago the city installed new emergency sirens.

Everyone noticed them.

They’re mounted on tall metal poles, about three stories high, with these big circular speakers pointing in different directions. You can see them from almost anywhere in my neighborhood.

The city sent out a flyer explaining them.

Apparently the old siren system was outdated, so they upgraded it with four different warning signals.

The flyer listed what each one meant.

Most people probably threw the paper away, but I kept it on my fridge.

It explained the four sirens like this:

Signal One Continuous wail

Severe weather warning.

Tornadoes, extreme storms, things like that.

Pretty normal.

Signal Two Pulsing tone

Evacuation notice.

Usually for chemical spills or fires.

Still normal.

Signal Three Rising and falling tone

Civil emergency.

This could mean riots, large scale accidents, or something that requires people to stay indoors.

Again, nothing too strange.

But the fourth signal was different.

The flyer said:

Signal Four Intermittent short bursts

If this signal is heard, all residents must immediately return inside their homes and lock all doors.

Remain away from windows.

Do not attempt to leave until an official announcement is made.

That part felt… oddly specific.

But I assumed it was probably for something rare.

Maybe a prison escape or something.

After a few days everyone forgot about it.

The sirens were just another piece of city infrastructure.

Until yesterday.

I was walking home from work around 11:40 PM.

The streets were quiet, but that’s normal for this area.

Most people are asleep by then.

I was about halfway down my street when the siren went off.

At first I thought it was the weather warning.

But it didn’t sound like the continuous wail.

Instead it made short bursts.

Three seconds on.

Three seconds off.

Again.

And again.

And again.

Signal Four.

I actually stopped walking because it caught me off guard.

Then I remembered the instructions.

Go inside.

Lock doors.

Stay away from windows.

The weird thing was… nobody else seemed to react.

My street has about twenty houses on it.

Some lights were on.

One TV flickering through a living room window.

But nobody came outside.

Nobody even looked.

It was like the siren wasn’t unusual to them at all.

That made me uneasy.

I walked faster.

By the time I reached my house the siren had been going for about two minutes.

I went inside, locked the door, and turned off the lights like the flyer suggested.

Then I sat in the dark living room listening to the siren.

Three seconds on.

Three seconds off.

Over and over.

After about five minutes I heard something else.

Footsteps.

Outside.

Slow.

Dragging.

Moving down the street.

I assumed it was someone else heading home.

But the steps sounded wrong.

Too slow.

And too heavy.

Like someone struggling to walk.

The steps stopped right outside my house.

I froze.

Then I heard something scrape against the front door.

Not knocking.

More like… feeling along it.

My heart started racing.

I remembered the flyer again.

Lock the doors.

Stay away from windows.

Don’t go outside.

So I stayed exactly where I was.

After a moment the footsteps moved on.

Slow.

Dragging.

Going down the street.

Eventually they faded away.

The siren kept going.

About twenty minutes later the siren stopped.

Just like that.

Silence.

I waited another ten minutes before turning the lights back on.

Everything looked normal.

The street outside looked normal too.

But something was bothering me.

The footsteps had sounded too heavy to belong to just one person.

So I checked my phone.

The city website posts alerts for every siren activation.

There was already an update.

It said:

Emergency Signal Four activated at 23:41.

All residents advised to remain indoors until further notice.

Under that was a small paragraph.

Something I had never seen before.

Residents are reminded that the purpose of Signal Four is not to warn you about something dangerous.

It is to warn something else that people are inside their homes.

I read that three times.

Trying to make sense of it.

Then I noticed something outside my window.

Movement.

Across the street.

Someone standing in my neighbor’s yard.

Perfectly still.

Watching the houses.

Even from this distance I could tell something about them was wrong.

Their arms were too long.

Their back was hunched.

And their head kept turning slowly… from house to house.

Like they were listening.

Then the sirens started again.

Three seconds on.

Three seconds off.

And the thing across the street suddenly stood up straight.

Like it had just heard something it understood.

Then it slowly turned.

And started walking away.

Down the street.

Into the dark.

I checked the city website again.

There was a second update.

Just posted.

It said:

Signal Four ended at 00:18.

Two entities successfully redirected away from residential areas.

Two.

But I only saw one.

Which means the other one never left my street.