Khalid set down his drink, reached up, grasped his zipper pull, and drew it down to his belly. The garment parted to reveal a sort of vest, sewn out of canvas, sporting a row of long, slender vertical pockets around the midriff. Each of the pockets was bulging full. From the top of each protruded a cylinder of clear plastic, like a piece of kitchen wrap that had been rolled around a flattened tube, about the size of a jumbo burrito, of amorphous yellowish-white stuff, a little bit like pie crust dough that hadn’t been rolled out yet. Electrical wires emerged from the top of each dough-tube. They were all linked together and ran up to Khalid’s shoulder and then down the sleeve of his windbreaker. He had his hand in his lap, but now coyly displayed it to Pavel and Sergei, letting them see a black plastic object topped with a red button.