The War On terror is raging. Violence is escalating. Time and time againCivilians are being kidnapped for ransom. Despite earlier assertions the government takes up negotiations to free the hostages. At the same time they also send a special unit of the US Navy seals just in case the negotiations take a little too long.
Face extremely dangerous and desperate opponents. They work in teams and can creep up on you from behind, surround you, call in reinforcements, sneak up, give each other cover or, when they are wounded, retreat from the battlefield or seek cover behind the nearest obstructions.