Tom Clancy's Splinter Cell - Kalinatek

Because Grímsdóttir's hack was detected by those at Kalinatek, the troops in the building are attempting to destroy any evidence that could lead to Nikoladze, including their computer technicians. Grímsdóttir intercepts a 911 call made from a technician called Ivan inside the building, who states that his life is in danger, and he will help the American government in exchange for rescue. He tells her that he is safe for now as he has closed the fire doors surrounding him but they won't hold forever. This new information necessitates an emergency mission to the Kalinatek building and Fisher has to move fast to find Ivan before he is found and killed. However, he is forced to make several detours when the troops plant mines throughout the building on vital parts of the structure, and a bomb is armed on the gas pipes in the main utility room. After deactivating all of these explosives, Fisher stumbles across a dying technician, who tells him that Ivan must be on the fifth floor. Lambert then tells Fisher that the FBI will collect Ivan and all he needs is Ivan's encryption key. Fisher locates Ivan hiding in the bathroom, and saves his life by killing his attacker. Ivan is anxious to leave with Fisher but Fisher just demands the encryption key from him. Reluctantly, Ivan hands over his encryption key. Fisher shoots his way out of the Kalinatek and escapes via The Osprey as FBI agents come to take over the scene and take Ivan into custody. Using the encryption key, the NSA discovers that Nikoladze has been using a network of unconventional relays to communicate with the Georgian military cells. Grímsdóttir manages to trace one of these data streams back to the Nadezhda Nuclear Power Plant in northern Russia, but due to the electronic noise surrounding the plant, is unable to trace the data any further; thus Fisher is sent to shut the power plant down.