Congress funded a project to use satellite and GPS technology for Air Traffic Control with ground control capabilities-never again could terrorists commandeer aircraft for use as weapons of terror. The president signed the bill into law and the Ground Control Computer System is operational. There's just one catch-planes are crashing all over the place. Eighteen months into her deep-cover assignment, three men upend FBI agent Gillian Anu's world. A seemingly kind-hearted pacifist, an oddly conflict-avoidant assassin, and her ruthless new boss have caused her to question her sanity. One of them has hacked the flight control system and launched a sales demonstration that will end with a nuclear strike on Washington DC. With pressure mounting and planes crashing, Gillian races to stop the terrorists while learning two foreign concepts-how to trust and who to trust.