STARS AND STRIPES --- Retired Navy Capt. Ralph Parrott couldn't believe his eyes. A bit of a world traveler, Parrott was exploring a former military base in the San Francisco area early last year when he came across the Mare Island Naval Cemetery, the oldest military graveyard on the West Coast. The landscape is marked by patches of weeds, dead leaves and bark, invasive roots, and neglected pepper and eucalyptus trees. Threatened by sinkholes, falling headstones from the 19th century are held up by logs. Stone work is crumbling and a white picket fence has darkened over time.