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Mitchel Field, New York. Positions with the Thompson machine gun are practiced by members of the air base squadron. This lesson is known as "dry firing." The men get the feel of the gun before they go on the firing line to use real ammunition
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Credit lineMitchel Field, New York. Positions with the Thompson machine gun are practiced by members of the air base squadron. This lesson is known as "dry firing." The men get the feel of the gun before they go. 1942-01-01. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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