Concrete, WWII's Fearless Freddie, and the U.S. Flag Designer
b'(Segment 1) How A 17-Year-Old Designed the Current US Flag for a School Project And Got a B-, (2-4) The Unlikely Relationship Between Two of NYC\'s Finest, (5-7) "Fearless Freddie" Warder, (8) Concrete: Shaping Our World Since the Roman Times'