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Roosevelt enlarges airforce
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WWII begins
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First turbo-engine used
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First mass produced aircraft
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Improved bombing aircraft
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Japan attacks Pearl Harbor
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USA declares war on Japan
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First American air offensive in WWII
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Increased range and bomb load
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August 6-9
B-29s drop atomic bombs on Hiroshima and Nagasaki -
First Kamikaze attack
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Sound barrier broken by Chuck Yeager
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First rocket launch