As a Marine tasked with guarding one of the world's biggest and most infamous military prisons, Abu Ghraib, you've come to expect the unexpected: The prisoners you oversee include some of the most hostile and uncooperative insurgents in the entire Middle East. But on this day, a vicious and simultaneous string of attacks is launched from the outside.

It begins in the guard towers. You survey the landscape, keeping a watchful eye on prisoners and the massive acreage, including a vast expanse of tented holding areas. You hear shots fired and know it is unfriendly fire, but where is it coming from? Before you can determine anything, an RPG clips your tower. A second RPG is fired, and this time, it is a solid hit.

You must secure the towers by taking out the RPG operators; silence the small arms fire and beat back the rebels before they breach the gate. If they succeed in murdering your fellow Marines and freeing the violent prisoners, it will open the floodgates of insurgency across the nation. If that happens, all could be lost: security, democracy, the whole war.