New reference footage from night vision monoculars (including the military standard PVS-14) demonstrates pretty conclusively that the supposed flying pyramid UFO actually looks exactly like a slightly out of focus light in the sky - quite possibly just a plane, as the ship was right under a flight path for LAX.

Some of the other lights are identified as Jupiter and some stars.

I don't think that means the Navy got it terribly wrong. This was initially unidentified (with the UAP Task Force Investigates), and they maybe even thought it was a triangle for a few minutes. But it's not. It's just some lights in the sky.

Thanks to Jesse and Stian for the footage, and Dylan_DTV for finding the astronomy match.