Ken Burns, from left, Trent Reznor, Atticus Ross and Lynn Novick speak at PBS’ “The Vietnam War” panel at the 2017 Television Critics Association press tour on Sunday, Jan. 15, 2017, in Pasadena, Calif. less Ken Burns, from left, Trent Reznor, Atticus Ross and Lynn Novick speak at PBS’ “The Vietnam War” panel at the 2017 Television Critics Association press tour on Sunday, Jan. 15, 2017, in Pasadena, Calif.