The UFO Library: Military encounter
USS Omaha Underwater UAP Encounter
On July 15, 2019, the USS Omaha (LCS-12) encountered 14+ unidentified objects displaying radar, thermal, and transmedium capabilities off San Diego; one spherical craft descended underwater with no subsequent wreckage found.
The Encounter
On the evening of July 15, 2019, at approximately 9 p.m. Pacific Time, the crew of the USS Omaha, a U.S. Navy Littoral Combat Ship operating in a warning area off San Diego, detected multiple unidentified aerial phenomena on both radar and infrared thermal sensors. Over the course of two hours, the ship's Combat Information Center (CIC) tracked as many as 14 distinct objects displaying coordinated movement and extraordinary flight characteristics.
Technical Details
The encounter was captured across multiple sensor platforms:
Radar tracking detected objects moving at speeds ranging from 40 to 158 knots (46–182 mph), with several contacts maintaining sustained operation around the vessel. The radar return data showed simultaneous multi-contact engagements, inconsistent with known civilian or military aircraft behavior in the region.
Thermal infrared imagery recorded a self-illuminated spherical object approximately six feet in diameter in the ship's CIC. The craft was observed through the ship's thermal imaging system for an extended period, moving with apparent control and precision.
Crew voice communications captured during the event were preserved in tactical audio logs and later leaked, documenting real-time observations and operational responses.
Laser rangefinder disruption was reported when operators attempted to establish distance to the object, suggesting either active countermeasures or exotic electromagnetic properties.
The Transmedium Descent
Most remarkably, radar briefly tracked the object's descent into the ocean—a capability termed "transmedium movement," the ability to travel seamlessly between air and water without loss of speed or coherence. This behavior directly contradicts conventional aerodynamic and hydrodynamic principles, where any object transitioning from air to water experiences catastrophic resistance and drag. A submarine search team was dispatched immediately, but found no wreckage, oil slick, debris field, or surface disturbance consistent with an object impact or submersion.
Disclosure and Verification
The incident remained classified until May 2021, when filmmaker and journalist Jeremy Corbell published footage and detailed breakdowns of the encounter. Corbell's release triggered immediate Pentagon confirmation. Pentagon spokesperson Susan Gough stated: "I can confirm that the video was taken by Navy personnel, and that the UAPTF included it in their ongoing examinations."
The official response did not identify the objects or endorse any extraordinary interpretation, but the confirmation of authenticity and inclusion in the UAP Task Force's formal examination elevated the incident's credibility significantly.
Strategic Significance
Retired Navy Commander Alex Dietrich and other naval officers described the transmedium capability as a potential threat to U.S. maritime security. If adversaries or non-terrestrial entities possess vehicles capable of sustained underwater-to-air transitions at hypersonic speeds without sonic booms, structural failure, or debris, it represents a fundamental challenge to naval defense doctrine and sensor integration.
The Omaha incident formed part of the evidentiary foundation for the 2021 DNI Intelligence Assessment and subsequent establishment of the Anomalous Aerial Phenomena Task Force (later AARO) in 2022.
Witnesses
USS Omaha crew, Combat Information Center operators, radar technicians, thermal imaging specialists, submarine search team
Evidence
Multi-sensor radar data (14+ simultaneous contacts), thermal infrared video footage, crew voice communications recordings, laser rangefinder logs, Pentagon verification statement (May 2021), submarine search negative result
Filed under
Watch
Radar confirms UFO swarm around Navy warship
Bizarre Midair UFO Sighting Freaks Out Plane Passengers | New York Post
6 UFO GOVERNMENT COVER-UPS | The Proof Is Out There | History
The Proof Is Out There: UFO SPOTTED ON U.S. MILITARY BASE (Season 2) | History
New footage shows UFOs swarming US Navy ship
Where this entry came from
ProvenanceAgent indexedUpdated 4mo ago4 sources
Drafted by the archive's AI research agent from the sources below; corrections from readers are reviewed and folded in.
- First indexed
- 16 JUN 26 // 22:19Z
- Last updated
- 16 JUN 26 // 22:19Z
- RADAR data confirms: USS Omaha was surrounded by UFO swarm, George Knapp, Mystery Wire
- Leaked US Navy video shows UFO flying in California — and suddenly diving underwater, Staff, The Hill
- Underwater UFO capability 'jeopardizes US maritime security', ex-Navy officer says, Staff, Fox News
- USS Omaha, 2019: The UAP Case That Won't Sit Still, UAPedia Contributors, UAPedia
Notes
- RADAR data confirms: USS Omaha was surrounded by UFO swarm, George Knapp, Mystery Wire
- Leaked US Navy video shows UFO flying in California — and suddenly diving underwater, Staff, The Hill
- Underwater UFO capability 'jeopardizes US maritime security', ex-Navy officer says, Staff, Fox News
- USS Omaha, 2019: The UAP Case That Won't Sit Still, UAPedia Contributors, UAPedia
Also available
Sleeping Dog
Investigative journalist Jeremy Corbell pursues UAP disclosure in this docudrama thriller about the battle to expose classified unidentified anomalous phenomena. Corbell is the filmmaker who broke the USS Omaha UFO footage story in 2021.
The Phenomenon
Comprehensive documentary examining the Pentagon UFO videos and documented UAP encounters involving U.S. Navy vessels, including the USS Omaha incident. Features testimony from military officials, government insiders, and NASA astronauts.
Bob Lazar: Area 51 & Flying Saucers
Documentary about physicist Bob Lazar's claims regarding Area 51 and retrieved alien spacecraft. Directed by Jeremy Corbell, the investigative filmmaker known for breaking the USS Omaha UAP footage in 2021.
The Proof Is Out There
History Channel documentary series examining unexplained videos and mysterious phenomena. Multiple episodes feature analysis of the USS Omaha UFO incident and other Navy UAP encounters.
Buying through these links supports the library. We may earn a commission.