Captain T’s sniper rifle hangs out of the truck window as he hums along to “The Warrior Song” blaring forth from his iPhone. It’s a tune that reminds him of one of his American trainers, back when the U.S. military was first rebuilding Iraq’s security forces, after the fall of Saddam Hussein.It’s been almost two years since Captain T saw his family, when ISIS took over their village in Nineveh ...