- "Anya. We crossed the river."
"Checkpoint One should be straight ahead."
- — Marcus Fenix and Anya Stroud
- "The Kryll are probably out by now."
"Yeah. They are. And they just killed the guys at Checkpoint One."
- — Franklin Tsoko and Dominic Santiago, after Dom and Marcus witnessed the Stranded at Checkpoint One being killed
Checkpoint One was created for extra securirty and as a supply point between Franklin's Outpost and Aspho Gas Station. When Sgt. Marcus Fenix and Cpl. Dominic Santiago were sent by Franklin Tsoko to the gas station, they stopped at Checkpoint One. They were told by the Stranded there to remain where they were while they turned on more lights. Unfortunately, the lights at the checkpoint went out and Kryll immediately devoured the two Stranded. However, Marcus and Dom survived, and proceeded to Checkpoint Two.