160613-N-EC031-043 WASHINGTON (June 13, 2016) Joint Base Anacostia-Bolling flies the American flag at half mast. President Barack Obama ordered all United States flags to half mast as a mark of respect for the victims of the act of hatred and terror perpetrated on Sunday, June 12, 2016, in Orlando, Fla. (U.S. Navy photo by Christopher Hurd/Released)