The air duct was a metal coffin.
It was barely two feet wide. Dust motes danced in the slivers of red light that cut through the seams. The metal rattled with the vibration of the entire facility.
Caleb crawled in front. I followed, dragging my body over the cold steel, shielding Leo’s head with my hand.
"Keep moving," Caleb whispered, his voice echoing strangely in the tube. "If we stop, the heat sensors will pick us up."
Below us, through the slats of the vents, we could hear chaos.
"Sector 4 Clear!" a guard shouted.
"Check the elevators! Lock down the perimeter!"
We were crawling right over their heads.
The Fan
We crawled for what felt like miles. My knees were bruised. My palms were scraped.
Then, the tunnel ended.
Blocked.
A massive industrial fan was spinning i
