One would have to remain behind long enough to stabilize pressure and prevent the escape compartment from flooding during evacuation.
Whitmore knew the calculations.
He had studied the system himself.
Nobody would have time to complete the repair and then join the others through the same route.
"Ethan, we can rotate someone in."
"No."
"That's an order."
Ethan looked up.
His expression remained steady.
"You don't have time to teach someone else what I'm doing."
A loud metallic crack echoed through the compartment.
The pressure gauge moved sharply.
Ethan pointed toward the escape hatch.
"Get them moving."
Whitmore hesitated.
"Blackwood—"
"Jonathan."
It was the first time Ethan had used his first name during the emergency.
Whitmore stopped.
Ethan's voice softened.
"You've got twelve lives on that side of the door. Don't spend them arguing about mine."
Whitmore would remember those words for the rest of his life.
The evacuation began.
One by one, the sailors moved into the escape system.
Ethan worked through the rising water, manually isolating damaged pressure lines and keeping the evacuation route stable.
Every movement cost him time.
Every adjustment bought someone else another chance.
When only Whitmore remained, Ethan looked over his shoulder.
"Go."
Whitmore shook his head.
"Not without you."
Ethan gave him an exhausted smile.
"You always were terrible at taking engineering advice."
The final warning sounded.
Ethan reached for the emergency bulkhead control.
Whitmore grabbed his shoulder.
"If there's a way back, you find it."
Ethan looked at him.
Then he said something Whitmore had never repeated publicly.
"My son's due soon."
Whitmore stared.
Ethan swallowed.
"I haven't even met him yet."
For one moment, the mechanical noise seemed to fade.
Then Ethan pushed Whitmore toward the hatch.
"Make sure he knows I tried to come home."
The bulkhead closed between them.
Whitmore hammered the steel once.
"Ethan!"
Through the small reinforced window, he could see Blackwood turning toward the failing pressure assembly.
Ethan raised one hand.
Then the compartment flooded with darkness.
Twelve sailors escaped.
The damaged submarine was lost.
The official report listed Commander Ethan Blackwood as killed in action.
His death was attributed to a classified operation.
No public explanation identified the location or the unit.
Whitmore submitted his account.
He described Ethan's decision.
He confirmed that twelve men survived because Blackwood stayed behind.
And when investigators informed him that there was no possibility of recovery, he believed them.
He had no reason to think otherwise.
What Whitmore never knew was that Ethan had survived the first failure.
The repaired pressure circuit held long enough for the evacuation to finish.
But the escape passage was already sealed.
Ethan remained trapped inside a small maintenance section as water spread through the damaged submarine.
His only chance lay in a secondary escape route near the aft compartment.
He had to reach it before the remaining air was lost.
The climb required crossing a partially flooded machinery space and forcing open an access hatch distorted by the damage.
Twice, he nearly lost his grip.
By the time he reached the emergency escape trunk, his left arm barely worked.