A group of Free Syrian Army rebels have built a tank with a .50 caliber machine gun operated by a PlayStation controller. It’s the kind of desperate ingenuity that they hope will give them a foothold as they face confrontation on two fronts from ISIS and the Assad regime.The Jaish al-Mujahideen brigade of the FSA say will be used mainly to evacuate injured soldiers from battles. To help them, one gunner gets to use a PlayStation 2 controller to wield a 50-calibre machine gun, with a camera hooke