The desert station's main room had become a fortress of determination.
Axel stood at the map table, his eyes tracing the lines that represented the Obsidian Vault. The facility was a fortress, its walls lined with cameras, its gates patrolled by armed men. It was the heart of the Covenant's inner circle, the place where their leader was hiding.
"We need to find a way in," Axel said, his voice flat. "We can't keep hitting walls."
"There's always a way," Flint said. "It's just a matter of finding it."
"Then find it."
Flint was silent for a moment. Then he said, "There's a weakness. A ventilation shaft that runs beneath the facility. It leads to the main control room. If we can get in through there, we can reach the leader before he knows we're coming."
"How do we get to the ventilation
