John Glenn on NACA transition to NASA

It’s been 100 years since the National Advisory Committee for Aeronautics (NACA) was founded to advance aviation. Eventually it would include space flight research and change its name to the National Aeronautics and Space Administration (NASA).
John Glenn was first a Marine test pilot and was among those who would push the envelope in aviation. In a series of interviews, Glenn reflects on NACA's impact in aviation research.
In this third installment, John Glenn discusses the importance of NACA and NASA research.