When once-secret files are declassified, the truth can be stranger—and more shocking—than fiction. In this countdown, we reveal 10 of the most jaw-dropping photos and videos ever released to the public.<br />From military operations and government secrets to mysterious events hidden from history, these visuals offer a rare and unsettling glimpse behind the curtain.<br />Some will fascinate you, others will disturb you—but all will make you question what else might still be hidden.
