The 4400

National Threat Assessment Command

NTAC, a division of the Department of Homeland Security, is formed in response to the return of the 4400. There are a multitude of agents assigned to the case. The series mainly follows two of them, as well as their immediate superior:

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• Tom Baldwin: Baldwin's nephew is Shawn Farrell; Shawn was with Baldwin's son Kyle Baldwin during the abduction. Kyle was in a coma for three years, and after being awoken is troubled by blackouts.
• Diana Skouris: Tom's partner. The eight-year old pre-cog Maia asks to move in with her at some point in season 1. In the first episode of season 2, Diana adopts Maia Rutledge.
• Dennis Ryland: Baldwin's and Skouris's supervisor and director of the Seattle bureau of NTAC during season one.
• Ryland is succeeded by Nina Jarvis in season two, but he takes his role back as a guest star on the 11th and 12th (season finale) episodes of season two.

(A real-life NTAC now exists as well; however, it is specifically part of the Secret Service division of the Department of Homeland Security, and the "C" stands for "Center" instead of "Command".)

Related Topics:
Secret Service - Department of Homeland Security

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