This is already known.

There are dozens of cargo container ships that have been cut off due to 'delays' in port, but the likelihood is more than they are locked down due to a threat. Could be a bioweapon from China.

Military in control, ports have been unofficially 'closed' according to intel.

The U.S. Navy has more fleets than publicly known, and one of the <visible> carrier groups is positioned off the coast of southern California. Majority of the publicly disclosed carrier groups are operating in these same waters.