Nighthawk by Clive CusslerGraham Brown

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. A doomed aircraft Flying over the South Pacific the most technologically advanced spacecraft ever built vanishes into thin air. Both China and Russia would kill for the secrets it contains. An unstable cargo Kurt Austin and the NUMA team are drawn into a stealthy race to locate the wreck before someone else does. On Paperback softback