Pentagon's seventh UFO release includes FBI report of silent black triangle

Pentagon files show western U.S. agents saw a silent triangular aircraft that sprang from a standstill with no exhaust.

The June encounter near an unnamed national security site appears in two documents: a memo and an FBI-signed statement. Agents were alerted by a colleague and spotted the object above a ridgeline after sunset.

"We initiated a visual survey of the western horizon and almost immediately observed a substantial, nonreflective, dark black triangular object most resembling a delta wing drone," they said in their FBI statement. They estimated its wingspan at 9–15 feet, depth 6–9 feet and thickness 1–2 feet.