Nelson Mitchell, the oldest living African-American Pearl Harbor survivor, reflects in the shrine room of the USS Arizona Memorial during a Pearl Harbor Survivor/ World War II, Family and Friends Harbor Tour at Joint Base Pearl Harbor-Hickam on December 5, 2015. The harbor tour is one of several events that will take place leading up to the 74th anniversary of Pearl Harbor Day to pay tribute to the nation's military while enlightening Americans about veterans and service. (U.S. Navy photo by Mass Communication Specialist 2nd ClassTamara Vaughn)