Fort Avalon
The island of Santa Catalina, California had already been taken over wholesale by the US war effort prior to the Serpentfall; and it was summarily ignored in the confusion, chaos, and wholesale devastation that shattered the United States. It took the US Coordinating Committee a year to even formally realize that the facilities on Santa Catalina were still in operation, and by then it was… perhaps ‘too late’ is the wrong term. The various groups there still all recognize the authority and legitimacy of the Warren administration. Provided that President Warren doesn’t push too hard on that.