To recap and compile some of the key findings in this thread (statements 1 through 7) in support of the likeliest hypothesis (statement 8):
(1) The
proximity of the mid-July 2019
USS Omaha UAP sightings to the San Clemente UAV/drone base
(2)
USS Kidd,
USS Rafael Peralta,
USS Russell,
USS John Finn and cruise ship
Carnival Imagination also reporting seeing swarms of "drones"/"UAV" through 14-15 July 2019 not far from San Clemente
(3)
The Navy, already in 2017, highlighting the importance of putting new technologies and tactics into fleet experimentation (tests) more quickly
(4) The
USS Omaha navigational radar readings being
within the capability parameters of known UAV technology, and probably
well within the parameters of cutting-edge experimental UAV capability
(5) The existence, since 2014, of
the classified NEMESIS program which addresses the need "
to generate the appearance of a realistic naval force to multiple adversarial surveillance and targeting sensors simultaneously", using, amongst other things, reconfigurable and modular EW payloads, Distributed Decoy and Jammer Swarms (DDJS), effective acoustic countermeasures (CM), and Multiple Input/Multiple Output Sensor/CM (MIMO S/CM) for false force generation to both above and below water sensors
(6) The
USS Omaha basic navigational radar (also commercially available) being a vulnerable target for false fleet signatures when using cutting-edge experimental electronic warfare technology
(7) The
ability to surprise, distract and overwhelm the enemy, including during fleet exercises, being the main purpose of drone swarms designed for tactical deception
(8) Taken together, single out as the likeliest hypothesis a Navy electronic warfare test using drone swarms and signature management conducted as part of a broader mid-July 2019 Navy fleet experiment.
I wouldn't go as far as saying the USS Omaha footage is explained. But if indeed classified US capability was being tested, the Navy would obviously not be in a position to confirm such a hypothesis.
However, we have collated sufficient data to arrive at the likeliest explanation with reasonable confidence.
P.S. There are precedents. We know from declassified CIA documents that many experimental USAF capabilities such as the SR-71 Blackbird were initially reported as UFOs when first spotted. The Pentagon had no qualms going along with that smokescreen.