If you look at stock charts, The Doolittle Raid was the turning point of the stock market! That is the point where stocks bottomed out, and started their upward trend after 1929.
Just shows, that a good old PR stunt can go a long way in public confidence.
I had always been under the impression that the Battle of Midway was what turned the Dow Jones Industrial Average up, but nope, it was the massive pr boost that the Doolittle raid made on the psyche of the American people.