Nighthawk: Numa Files #14 (The Numa Files)When the most advanced aircraft ever designed vanishes over the South Pacific, NUMA operatives Kurt Austin and Joe Zavala are drawn into a deadly contest to locate the fallen machine. Russia and China covet the radical technology, but the United States worries about a darker problem. They know what others don't that the X 37 is carrying a dangerous secret, a payload of exotic matter, extracted from the upper reaches of the atmosphere and stored at a