The Vietnam War Summit

U.S. Secretary of State John Kerry, right, stands onstage with documentary filmmaker, Ken Burns, left, for “A Conversation With Documentary Filmmakers,” at The Vietnam War Summit held at the LBJ Presidential Library Wednesday, April 27, 2016, in Austin, Texas. Burns, along with Linda Novick, discussed their PBS series, “The Vietnam War,” scheduled to debut in 2017. (AP Photo/Nick Ut)