The concrete goes on forever, vanishing into the noonday glare, 2 million cubic feet of it, a mile-long slab that’s now the home of up to 120 U.S. helicopters, a “heli-park” as good as any back in the States. At another giant base, al-Asad in Iraq’s western desert, the 17,000 troops and workers come and go in a kind of bustling American town, with a Burger King, Pizza Hut and a car dealership, stop signs, traffic regulations and young bikers clogging the roads. Full Story