With unprecedented access and footage to some of the most protected U.S. government agencies. Classified opens these restricted files and takes viewers behind the concrete walls, surveillance cameras, and curtain of national protection.
|First Air Date||2009-06-21|
|Last Air Date||2011-08-29|
|Episode Runtime||00 Hours 00 Minutes|
|Total Episode(s) on All Seasons||4|
|Production Companies||National Geographic Society|