As on every Memorial Day, small flags will be placed next to neat, respectful rows of headstones at military cemeteries across America. Neat and respectful is not how you would describe Mare Island Naval Cemetery – a forsaken plot of hallowed ground that fell between the cracks of Pentagon base closings and the city of Vallejo’s bankruptcy. The oldest military cemetery on the West Coast is in utter disrepair. It is the final resting place for 800-plus veterans, including a few who fought in the War of 1812 and three Medal of Honor recipients. The daughter of Francis Scott Key,...