The story, according to the Battlefield website, follows American VIPs' evacuation from Shanghai and an American squad struggling to make their way back home; however, still no information has been revealed about what branch of the United States military they are from, however MARPAT (MARine PATtern) camouflage can be seen on the characters throughout the trailer, as well an UH-1Y Venom leading one to assume they are US Marines. In the 17-minute gameplay trailer released on March 26, 2013, the player is seen engaging Russian special operators, confirming Russia's return as a faction. In addition, China is confirmed as another faction as, at the trailer's end, an unidentified caller can be heard going toward the east coast of China. The trailer reveal showcased a campaign mission called "Fishing in Baku," Baku being the capital and largest city of Azerbaijan, which lies on the Caspian Sea's coast.