The U.S. military actively conducted air-to-ground attacks against Japanese forces using aircraft machine-gun fire during the Pacific War. As a result of repeated assaults on poorly defended vessels, such as transport ships and their crews, as well as soldiers deployed on the ground, the Japanese military, which had little effective anti-aircraft weaponry, suffered immense damage. Gun cameras were installed on the wings of U.S. fighter planes to record their combat achievements, with recording starting simultaneously when the trigger was pulled. The footage of machine-gun strafing captured at various locations in Japan is preserved in the U.S. National Archives. A portion of the footage was featured in a special program by Tokyo Broadcasting Station commemorating the 70th anniversary of the end of World War II on August 15, 2015. "70 Years After the War: My Town Was Also a Battlefield II"
Chambers, Joseph R (2014). Cave of the Winds: the remarkable history of the Langley full-scale wind tunnel. pp. 151–52. ISBN9781626830165. OCLC871536711.