Walter, Broyles and Astrid scramble for answers when Peter and Olivia become trapped in a Boston office building that's been quarantined by the Centers for Disease Control because of a deadly virus.
A corporate jet crashes in a forest and Charlie tries to determine the cause by analyzing the plane's flight computer.
A rebellious Navy pilot goes on the run in enemy territory after his jet is shot down over Bosnia. His plane is blown out of the sky after a routine photographic reconnaissance mission captures grisly images that serve as proof of genocidal crimes.
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