ADVANCE FOR USE MONDAY, NOV. 10, 2014, AND THEREAFTER- This Oct. 2, 2014, photo shows dusty keys in the mail slots of a hospital basement post office at the former Mare Island Naval Shipyard in Vallejo, Calif. The shipyard dates from the 1850s and was the first U.S. Navy base in the Pacific. At its peak in World War II some 50,000 worked on the island. Today about 4,000 either work, live or go to school there. A number of its buildings and facilities are still empty following the closing of the shipyard in 1996. (AP Photo/Eric Risberg) More
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