NRO Sentient system

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Contents 8
NRO Sentient system
Seal of the United States National Reconnaissance Office .
Seal of the United States National Reconnaissance Office . Photo: U.S. Government · Public domain · via Wikimedia Commons
Date27 February 2023
TopicsGovernment programs (topic)
PeopleJohn Greenewald
TestimonyShellenberger testimony, p. 214
Year2023 in UFO history
Timeline2023 on the UAP Timeline
Sources3

Records released under the Freedom of Information Act in 2022–2023 show that the U.S. National Reconnaissance Office (NRO) had a UAP-detection capability in its classified artificial-intelligence system Sentient, and that an NRO system flagged a small unidentified object, likened to the "Tic Tac" seen by Navy pilots, on 6 May 2021.[1][2]

Sentient

NRO Sapp Sentient Future Ground Architecture 2016 slide
NRO Sapp Sentient Future Ground Architecture 2016 slide Photo: Betty Sapp , Leadership of the National Reconnaissance Office , National Reconnaissance… · Public domain · via Wikimedia Commons

Sentient is an NRO program, first publicly described in 2019, that automatically fuses satellite and other data to detect, track and predict the activity of objects of interest. A 29 June 2021 email released to researchers said the NRO's Sentient research and development included a "UAP model" to look for UAP in imagery, but that an external customer needed to ask for it to be turned on; it is not known whether it was.[2][3]

The 2021 detection

Illustration of a jet meeting an unknown object
Illustration: a jet meeting an unknown object. An artist's impression drawn for this site, not a photograph of the event.

Redacted NRO slides, pieced together by researcher John Greenewald of The Black Vault, show that the system flagged a small object it could not match to a known aircraft, which also appeared in a second over-water image of the same area about 15 seconds later — suggesting it was not a sensor artefact. One slide noted a rough similarity to objects previously reported by the Navy; a vessel detected nearby may have been unrelated. At least 24 pages of PowerPoint material were withheld in full.[2]

The UAP Task Force

Illustration of official papers and files
Illustration: official papers and files. An artist's impression drawn for this site, not a photograph of the event.

Other released NRO records show that the agency contributed four paragraphs to the classified June 2021 UAP report to Congress and had to sign off on it, with an NRO point of contact for the UAP Task Force; ten pages were withheld.[1]

Significance

Illustration of a disc-shaped craft in the night sky
Illustration: a disc-shaped craft in the night sky. An artist's impression drawn for this site, not a photograph of the event.

The releases contradicted the NRO's earlier position, in a 2015 reply to Greenewald, that it had no UFO records and that the subject was outside its responsibilities. The NRO has not released details of what the 2021 object was or whether it was explained.[1][2]

People and topics

NSA Colorado (NSAC) Aerospace Data Facility Colorado (ADF-C) on Buckley Space Force Base
NSA Colorado (NSAC) Aerospace Data Facility Colorado (ADF-C) on Buckley Space Force Base Photo: Unknown author Unknown author · Public domain · via Wikimedia Commons

On the Timeline

Flying saucer from the USA National Archives and Records Administration, cropped from the original here…
Flying saucer from the USA National Archives and Records Administration, cropped from the original here… Photo: Unknown author Unknown author · Public domain · via Wikimedia Commons

See every 2023 event on the UAP Timeline →

References

Further reading

This page was last edited on 29 October 2026. Articles are written in our own words from the sources listed under References; disputed claims are attributed to the people who made them.

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