1926-1946: Major developments, including an increased understanding of aerodynamics, the invention of radar and bomb delivery systems.
 
September 2007 ( check local listings )

The second hour covers the period 1926-1946. This era in aviation history saw a number of major developments: an increased understanding of aerodynamics that allowed engineers to build planes that could fly faster and farther; the invention of radar, which enabled defensive forces to detect approaching aircraft; the rise of the ace fighter pilots; and improved bomb delivery systems. This last development may have had the most destructive and terrifying effects, giving rise to the Blitz over London, the firebombing of Germany and the atomic bombings of Hiroshima and Nagasaki.