After further exploration

Jack must once again search for and rescue Valerie.
This is difficult because more Trigens have escaped, some of them with powerful weapons. the Trigens have begun to rebel against the mercenaries on the island, causing chaos, and Kriegel has to call in his personal elite special forces to control the situation. Shortly after Jack finds Valerie, he kills the mercenary commander, Richard Clow. Clow's information indicates that Kriegel has tactical nuclear weapons on the island. Valerie further revealed that Doyle was a CIA agent who had infiltrated Kriegel's research lab as a lab technician.