Boeing whistleblower says 787 Dreamliner has production flaw

On the eve of his testimony before a congressional committee, Sam Salehpour, a Boeing engineer, tells NBC News' Tom Costello that he raised concerns to his superiors about a number of issues, including a gap between parts of the 787's fuselage that is not up to Boeing's specs. Boeing insists the plane is safe and has shown no signs of fatigue.