Three survivors of the USS Arizona take a photograph with defense leaders at the Pentagon, July 21, 2017. From left to right are Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff; Navy Adm. John Richardson, chief of naval operations; Navy veterans Lauren Bruner, Ken Potts and Donald Stratton; and Defense Secretary Jim Mattis. DoD photo by Air Force Tech. Sgt. Brigitte N. Brantley