Fbi Files Db Cooper Case Reveal Strange New Clues Releases On Infamous Plane Hijacker Ing

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美国联邦调查局（fbi）：隶属于美国司法部，全称为federal bureau of investigation。fbi不仅代表联邦调查局的缩写，还代表.

The FBI Has Released 472 New Pages in D.B. Cooper’s File—With Riveting