The instructor stared at the control panel.
“That door was cleared.”
Mason stayed beside me.
“You’re certain?”
“I cleared it myself.”
The instructor tapped the display.
“The main exit was checked before the exercise started. Nothing in the scenario called for it to be locked.”
I turned toward the observation window.
The figure I had seen was gone.
Only smoke moved through the corridor now.
“Someone was there,” I said. “Instructor’s uniform. He removed his badge.”
The instructor looked at Mason.
“You saw him?”
“Not clearly.”
“But you knew someone was behind the door.”
“I heard the latch. Then footsteps.”
I remembered the sound.
Metal clicking.
Someone moving away.
Then the pressure against the other side when I tried the handle.
I looked at Mason.
“You knew before I did.”
“I knew the door had changed.”
“How?”
He pointed toward the corridor we had just escaped.
“When we passed it earlier, the indicator was clear. When we came back, the door wasn’t behaving like a training exit anymore.”
“So you pulled me away.”
“Yes.”
“Without explaining.”
“There wasn’t time.”
I touched the place on my shoulder where his hand had grabbed my vest.
“I thought you were stopping me from getting out.”
“I know.”
The training instructor interrupted.
“We need to shut down the exercise.”
He reached for his radio.
Mason stopped him.
“Don’t announce why yet.”
The instructor frowned.
“Why?”
“If someone deliberately changed the exit, they may still be inside the training area.”
I looked toward the smoke.
The instructor lowered the radio slightly.
“Then we account for everyone first.”
He made the call without mentioning the locked door.
The exercise was suspended.
Participants were directed toward designated safe areas.
No explanation was given.
Within minutes, instructors began reporting their locations.
One by one.
Then the man beside the control panel frowned.
“We’re short one.”
“Participant?” Mason asked.
“Instructor.”
My stomach tightened.
“Who?”
He checked his roster.
“Daniel Reeves.”
Mason looked toward the observation window.
“Was Reeves assigned to that corridor?”
“No.”
“Where was he supposed to be?”
“Control station three.”
The instructor radioed the station.
A voice answered.
“Reeves isn’t here.”
“When did he leave?”
“He didn’t. He never reported.”
The instructor lowered the radio.
I felt the room change.
The missing instructor was no longer just late.
Someone wearing an instructor’s uniform had been standing near a door that should never have been locked.
And the person I saw had removed a badge before disappearing.
“Could the man I saw have been Reeves?” I asked.
The instructor hesitated.
“I can’t say.”
That was the right answer.
We knew someone had been there.
We didn’t yet know who.
Mason walked to the control panel.
“Can you tell when the exit status changed?”
The instructor opened the event log.
His finger stopped.
“There.”
A manual override had been entered after the exercise began.
“Who has access to that?” I asked.
“Instructors and control staff.”
“Can you tell whose credentials were used?”
He checked.
Then his face tightened.
“Reeves.”
Mason didn’t react immediately.
“Does that prove Reeves entered it?”
“No. Anyone with his access card could have used his credentials at the panel.”
“Where is his card?”
The instructor reached for his radio again.
This time the response came quickly.
Reeves had been found.
But not where anyone expected.
He was outside the training building.
And he had never entered the exercise area.
A few minutes later, he was brought into the clear-air room.
He sounded confused before he even reached us.
“What’s happening?”
The instructor asked him one question.
“Where’s your access badge?”
Reeves touched his chest.
Then his pockets.
His confusion became alarm.
“I had it this morning.”
“When did you last see it?”
“Before the briefing.”
“You didn’t notice it missing?”
“I thought I’d left it in my locker.”
Mason looked at me.
The image returned instantly.
A person in an instructor’s uniform.
A hand reaching toward his chest.
A badge coming off.
Then disappearing into the smoke.
I had assumed he was removing his own identification.
Maybe he had been removing someone else’s.
The instructor asked Reeves to describe his uniform.
It matched what I had seen.
But so did the uniforms of several instructors.
There still wasn’t enough to identify the person.
Mason seemed to understand the same thing.
“Don’t guess,” he told me.
“I won’t.”
The instructor pulled up another system screen.
“If someone used Reeves’s badge, there should be more than the door override.”
He searched the access history.
There was.
Reeves’s credentials had opened a staff entrance shortly before the exercise.
Then a storage area.
Then the control point connected to our corridor.
Three locations.
Reeves stared at the screen.
“I wasn’t at any of those.”
“Can anyone confirm where you were?”
“Yes. I was outside with the equipment team.”
The instructor made a call.
Several people confirmed it.
Someone had apparently been moving through the building with Reeves’s credentials.
“Why?” I asked.
Nobody answered.
That was the question that mattered now.
Locking the exit could have been sabotage.
But someone had also been waiting near it.
And Mason believed that person wanted us to follow.
I turned toward him.
“Why did you say you were stopping me from following him?”
“Because of the footsteps.”
“What about them?”
“They didn’t run away.”
I remembered listening through the smoke.
He was right.
The footsteps had moved.
But not quickly.
“They wanted us to hear them?”
“I don’t know.”
Mason refused to go further than the evidence.
Then he added, “But if someone wanted to escape without being noticed, there were quieter ways to do it.”
The instructor studied the access log.
A new entry appeared.
He leaned closer.
“What is it?” I asked.
“The badge was just used again.”
“Where?”
He turned the screen toward Mason.
“Equipment storage.”
Mason immediately headed for the door.
The instructor stopped him.
“We don’t know who’s in there.”
“Then don’t send anyone alone.”
Security was called.
I stayed in the clear-air room while Mason went with them.
For the first time since the exercise began, I had nothing to do except wait.
That was worse than the smoke.
I kept thinking about the exit.
I had been certain Mason was the danger.
He had grabbed me.
Pulled me away.
Stopped me from opening the door.
Everything I could feel in that moment told me he was preventing me from escaping.
But he had heard something I hadn’t understood.
Someone was controlling that door from the other side.
Twenty minutes later, Mason returned.
“Storage was empty.”
My heart sank.
Then he placed something on the table.
An instructor’s jacket.
Reeves stared at it.
“That’s not mine.”
The instructor checked the identification patch.
There wasn’t one.
Mason placed another object beside it.
A damaged plastic badge holder.
Empty.
“Where did you find those?” I asked.
“Behind an equipment cabinet.”
The instructor examined the jacket.
“Anyone could have taken this from supplies.”
That meant the uniform itself proved very little.
But it established something else.
Whoever I had seen could have changed appearance quickly.
The instructor returned to the computer.
“There are cameras near the staff entrance.”
We waited while security reviewed the footage.
Several minutes later, one of them called from another room.
They had found something.
Not a face.
The person had kept his head turned away from the camera.
But the footage showed someone entering with Reeves’s badge before the exercise.
He carried a bag.
When he left the camera’s view, he was wearing ordinary clothing.
Later, someone with the same build appeared near the training area wearing an instructor’s uniform.
“Can you identify him?” I asked.
“Not from this.”
Mason crossed his arms.
“But now we know the disguise happened before the drill.”
The instructor nodded.
This hadn’t been an instructor making a bad decision during an exercise.
Someone had entered using credentials that did not belong to him.
Someone had obtained an instructor’s uniform.
Someone had changed a cleared exit.
And that person had been waiting near our route.
The instructor looked at me.
“Did you recognize anything about him?”
I thought carefully.
Height.
Movement.
Uniform.
The way he removed the badge.
Then I remembered something else.
“He knew which way we were coming.”
Mason turned toward me.
“What makes you say that?”
“He wasn’t surprised when we reached the exit.”
“You could see that through the smoke?”
“Not his face.”
I shook my head.
“But he was already positioned there.”
Mason looked toward the training map.
Our route had not been random.
It had been assigned.
Someone with access to the exercise plan would have known where we were expected to go.
The instructor seemed to reach the same conclusion.
He pulled up the briefing records.
Then he stopped.
“Our route changed this morning.”
“What?”
“The original plan sent your group through the east corridor.”
Mason stepped closer.
“Who changed it?”
The instructor opened the revision history.
Nobody spoke.
Then he read the name attached to the change.
It wasn’t Reeves.
It wasn’t Mason.
And it wasn’t any instructor currently standing in the room.
The account belonged to someone who had been removed from the training program months earlier.
I stared at the screen.
The locked exit was no longer the strangest part of what had happened.
Someone had known our route before we entered the smoke.
Someone had stolen credentials to get inside.
And whoever had been waiting behind that door hadn’t simply found us by accident.
He had helped send us there.
