"7""/44 caliber gun - Transportation personnel at Naval Support Facility Dahlgren prepare to off-load a World War I-era 7-inch gun on a tracked mount, the first gun originally test-fired to mark the establishment of Dahlgren as a naval proving ground on Oct. 16, 1918. The 7-inch, 45 caliber gun will be restored by the Naval Surface Warfare Center Dahlgren Division."
{"Image ImageDescription": "090720-N-6148D-001 DAHLGREN, Va. (July 20, 2009) Transportation personnel at Naval Support Facility Dahlgren prepare to off-load a World War I-era tractor-mounted artillery piece, the first gun originally test fired to mark the establishment of Dahlgren as a naval proving ground on Oct. 16, 1918. The 7-inch, 45-caliber gun will be restored by the Naval Surface Warfare Center Dahlgren Division. (U.S. Navy photo by Doug Davant/Released)", "Image XResolution": "72", "Image YResolution": "72", "Image ResolutionUnit": "Pixels/Inch", "Image Artist": "Doug Davant", "Image YCbCrPositioning": "Centered"}