However when they finally reach the point at which they can seal the breach, the squad instead decides that they should kill the Firstborn rather than try to reseal the breach, as resealing would just result in them being trapped in the Box and endlessly tortured until the breach was opened again just like as happened with all their past allies. Traveling into the Firstborn's cavern, they find the creature in the middle of an island on a lake, with Leach bound to a nearby wall. Before Cole could identify the Firstborn's weaknesses, the Firstborn kills Cole and Jones and battles the surviving squad members.
The squad's decision to kill the Firstborn is driven by their fear of being trapped again, similar to previous allies who were tortured. The discovery of the creature on an island in a lake with Leach bound to a wall foreshadows a confrontation with the Firstborn.