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{{Information |Description=German BK5 50 mm cannon on display in the Air Power Gallery at the National Museum of the United States Air Force. |Source=http://www.nationalmuseum.af.mil/factsheets/factsheet.asp?id=1012 |Date= |Author=USAF |Permission= |other
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Image title
DAYTON, Ohio -- German BK-5 50mm cannon on display in the Air Power Gallery at the National Museum of the United States Air Force. (U.S. Air Force photo)