You might want to expound on your opinions a bit. The link is to a local San Diego paper. How is that lazy? We had the same kind of unexplained happening in Florida in Fort Lauderdale. The link was to a local news video. There were loud booms heard but no one ever found the answer for them. They were not earthquakes, and people were left to make their own conclusion. Given the amount of Air Force action all along our coast (I'm from East Central Florida on the coast and was driving near Patrick Space Force yesterday afternoon and was amazed at the helicopter traffic), and the most recent detonation of the coast of Daytona, I believe we're either bombing subs and that was the reverberation heard or there's a tunnel.

And why be so hard on someone if you consider them new?