In April 2004, the president of Georgia is assassinated, allowing Georgian billionaire Kombayn Nikoladze to seize power with a bloodless coup d'état. In August 2004, former U.S. Navy SEAL officer and Gulf War veteran Sam Fisher is recruited by the National Security Agency to work within its newly formed division, "Third Echelon". Working with his old friend Irving Lambert, Fisher is introduced to technical expert Anna "Grim" Grimsdóttír, and field runner Vernon Wilkes Jr. In October 2004, Fisher is dispatched to Tbilisi, Georgia to investigate the disappearance of two CIA officers. Fisher attempts to meet an informant, Thomas Gurgenidze, only to find him dying in a burning building. Gurgenidze warns that one agent's transmission mentioned proof that could cause a war. Finding the agents' corpses in a police morgue, Fisher learns that a former Spetsnaz member, Vyacheslav Grinko, removed their subdermal tracking implants. Further investigation of Grinko's license plate number using CCTV leads Third Echelon to tracks him to the Georgian defense ministry headquarters.