United States.USS Omaha — transmedium sphere

On 15 July 2019, in a restricted warning area off the coast of San Diego (California), the littoral combat ship USS Omaha and other U.S. Navy units recorded a series of unidentified spherical objects. From the Combat Information Center —the ship's command hub, where sensor data are fused— a dark sphere was filmed with a FLIR (forward-looking infrared) camera and night-vision devices, moving over the sea, stopping, and finally descending until it touched the water and vanished beneath the surface, with no wake, prolonged splash or visible debris —the behavior UAP literature calls 'transmedium' (air-water transition). In the clip's operational audio the crew is heard narrating the event in real time ('splash'), a detail reinforcing that this was not a later interpretation but something tracked live by trained operators.

The episode was not isolated: it was part of a wave of 'sphere' incursions over several Navy ships off San Diego in July 2019 (USS Omaha, USS Russell, USS Kidd, USS Rafael Peralta, USS John Finn, among others). According to the released material, one ship's radar showed at one point up to 14 spherical objects maneuvering around the formation, with estimated speeds ranging from about 40 to over 130 knots. From those same days comes the so-called 'pyramid' video, filmed in night vision from the USS Russell, in which camera optical artifacts may explain at least part of the perceived triangular shape —a reminder that not the whole batch carries equal weight. After the Omaha incident, a submarine search of the area found nothing.

The material came to light in 2021, released by filmmaker Jeremy Corbell alongside investigative journalist George Knapp. In April 2021, Pentagon spokesperson Susan Gough confirmed that the videos had been captured by Navy personnel and that the UAP Task Force (UAPTF) included them in its ongoing examinations. The confirmation covered the footage's provenance and authenticity, not an explanation of its content: the origin was left undetermined. Among conventional hypotheses, the strongest is an unmanned-systems operation —drones, possibly adversary surveillance— which would account well for the coordinated swarm in a naval exercise area. The sphere's descent into the water with no visible wake, by contrast, remains the element that fits a conventional drone worst and the most debated part of the case; skeptics point to the sensor's low resolution and the difficulty of judging depth and scale from a single monocular camera.

The USS Omaha case matters because it combines two things that rarely coincide: a Navy multi-sensor recording (radar + FLIR + night vision, across several ships in one formation) and official Pentagon confirmation that the material is genuine and was under analysis by its dedicated task force. That sets it apart from home-video ufology and anchors it in a verifiable institutional chain of custody. It is also part of the 2017-2021 regime shift, when the Navy formalized UAP reporting procedures, serious press (including the New York Times) treated the topic as a flight-safety matter, and Congress began demanding reports —the context that turns these clips into institutional data rather than anecdotes.

At the same time, the case honestly marks its limits, which is why it lives in Tier A and no higher. The official confirmation is of authenticity and provenance, not of nature: the Pentagon validated that the Navy recorded something, not what it was. The soberest explanation of the swarm —a drone operation, perhaps adversary surveillance in a sensitive naval exercise area— is plausible, fits the coordinated behavior and should not be dismissed; indeed it would be a serious national-security finding in its own right. What resists that reading is the sphere's descent into the water with no visible wake, narrated live by the crew, together with the empty submarine search afterward. That single datum —dependent on a low-resolution monocular sensor whose interpretation is disputed— is what keeps the case open. It is a good example of the site's standard: anomaly documented by sensors and institutions, with the conclusion deliberately suspended.