PARIS, FRANCE - NOVEMBER 15:  Friends reunite in memory of a victim near 'Le Bataclan' theatre on Boulevard Voltaire following Fridays terrorist attack and France observes three days of national mourning on November 15, 2015 in Paris, France. As France observes three days of national mourning members of the public continue to pay tribute to the victims of Friday's deadly attacks. A special service for the families of the victims and survivors is to be held at Paris's Notre Dame Cathedral later on Sunday.  (Photo by Marc Piasecki/Getty Images)