Most frequently off the coast of California.
So what is it about the coast of California?
Look, I don't think it's a coincidence that California is the home to some of the biggest aerospace companies in America.
There are, as we know, huge gulfs of water just off the coast of California.
The Baja California area is where the U.S. Nimitz incident happened in 2004.
And by the way, to your point that California is the home to so many military bases, we know that many of the UFO sightings on land are also over nuclear facilities or sensitive defense installations.