The Pentagon is on the verge of getting a real-life X-Files office dedicated to investigating UFOs, their origins and attempts to "capture or exploit" one of the mysterious craft.

US lawmakers are expected to push through the annual NDAA legislation which includes a historic amendment that sets up a dedicated unit called the Anomaly Surveillance and Resolution Office (ARSO).

Like something out of hit sci-fi drama The X-Files - which saw special agents Mulder and Scully track down the explained and the alien - the Pentagon's new office will investigate unexplained sightings and attempt to identify them.

It will probe whether or not the strange craft that have been reportedly buzzing the US military are unknown technology from Russia and China or potentially something more alien.

The office will be set up jointly between the Department of Defense and the Office of the Director of National Intelligence (DNI) - a key marriage between the intelligence and military communities.

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