"Blackout" is the fourth mission in Call of Duty 4: Modern Warfare. Taking place the day after Khaled Al-Asad's coup in the Arabian Peninsula, this mission sees the S.A.S team, led by Captain Price, joining forces with Russian Loyalist troops in the Caucasus Mountains to rescue a Russian informant and liberate an Ultranationalist-controlled village.
plot
Shortly after Al-Asad makes his move and overthrows the government of President Al-Fulani, the SAS learns that Nikolai, their informant, who provided the SAS with intelligence on their previous mission aboard the Estonian[1]freighter, has been compromised and taken prisoner by the rebel forces. Realizing that the Ultranationalists intend to execute Nikolai as a traitor, Price leads a rescue mission into the Caucasus to retrieve the informant, remarking that "We take care of our friends." Inserting near Nikolai's position, the team first silently eliminates several guard posts before meeting up with Russian Loyalist troops lead by Sergeant Kamarov.
It is clear from their discussion that Price and Kamarov, despite having fought alongside each other in the past, have very different objectives in this mission. For Price, Nikolai's survival is paramount and beyond all other considerations. Kamarov, meanwhile, hopes to free the nearby village from Ultranationalist control and eliminate the threat posed by their BM21s. Since both need the other's forces in order to be successful, a great deal of tension exists between the two men. As the Loyalist troops make their assault upon the village, MacTavish provides sniper support from the nearby ridge and eliminates a force of Ultranationalist helicopter troops flanking from the left, allowing the Loyalists to make greater gains in the village.
Eventually however, Gaz, frustrated with Kamarov's stalling, beats Nikolai's location out of him, a house at the end of the village. Abandoning their Loyalist allies, the SAS team makes their way to the house. MacTavish and Price enter the house as Gaz cuts the power, and the team successfully secures Nikolai. With the informant secure and the village in control of the Loyalists, the team is extracted via helicopter that heads for a German safehouse.