WASHINGTON, DC – U.S. Senator Mazie K. Hirono (D-HI), a senior member of the Senate Armed Services Committee, joined Senators Mark Warner (D-VA), Jack Reed (D-RI), Chris Coons (D-DE), and 20 colleagues in sending a letter to President Donald Trump regarding the firing of the Director of the National Security Agency (NSA) and Commander of U.S. Cyber...