Terry Moran has the latest on the bomb threats in Springfield, Ohio, as Donald Trump doubles down on false claims he made during the debate about Haitian immigrants; Alex Perez is in Washington state to report on the concerns of a possible ripple effect to the U.S. economy after 33,000 union workers walked off the job at Boeing; Matt Gutman takes a rare trip inside a devastated strip of land in Southern Gaza; and more on tonight's broadcast of World News Tonight.