All Fall Down — Lee Gruenfeld

Within hours after a passenger jet nearly crashes in a Washington State fog, the National Transportation Safety Board receives a demand for $5 million. The extortionist's threat: to electronically scramble the brains of virtually any aircraft flying in the U.S. For Jack Webster, a former Navy commander and now an FBI investigator, the first mystery is why the terrorist hasn't asked for more. In the following days and hours, Webster gets his answer: His adversary, maneuvering skillfully behind the labyrinth of a far-flung financial computer network, has more at stake than money. A cargo jet crashes and Webster's worst fears are confirmed. Now true heroes are needed, both on the ground and in the dangerous skies, before...All Fall Down.