{"id":4021,"date":"2017-02-20T03:38:44","date_gmt":"2017-02-20T03:38:44","guid":{"rendered":"http:\/\/www.theblackvault.com\/documentarchive\/?p=4021"},"modified":"2017-02-20T03:38:44","modified_gmt":"2017-02-20T03:38:44","slug":"report-coast-artillery-board-project-no-1153-heavy-antiaircraft-gun-march-9-1939","status":"publish","type":"post","link":"https:\/\/www.theblackvault.com\/documentarchive\/report-coast-artillery-board-project-no-1153-heavy-antiaircraft-gun-march-9-1939\/","title":{"rendered":"Report of the Coast Artillery Board on Project No. 1153, Heavy Antiaircraft Gun, March 9, 1939"},"content":{"rendered":"<h3>Background<\/h3>\n<p>This document had been classified since 1939, and has never seen the light of day. In fact, at the time of requesting, even the title was classified, and was unknown. \u00a0In essence, when I filed the Mandatory Declassification Review (MDR) request to the Department of Defense (DOD), I had no idea what I was going to find.<\/p>\n<p>The MDR was a success, and the document was released.<\/p>\n<h3>Declassified Document<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/www.theblackvault.com\/images\/pdf.gif\" \/>\u00a0<a href=\"https:\/\/documents.theblackvault.com\/documents\/dod\/ADC955131.pdf\">Report of the Coast Artillery Board on Project No. 1153, Heavy Antiaircraft Gun, March 9, 1939<\/a> [74 Pages, 10.9MB]<\/p>\n<p>https:\/\/documents.theblackvault.com\/documents\/dod\/ADC955131.pdf<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Background This document had been classified since 1939, and has never seen the light of day. In fact, at the time of requesting, even the title was classified, and was unknown. \u00a0In essence, when I filed the Mandatory Declassification Review (MDR) request to the Department of Defense (DOD), I had no idea what I was<\/p>\n","protected":false},"author":1,"featured_media":4022,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"episode_type":"","audio_file":"","transcript_file":"","podmotor_file_id":"","podmotor_episode_id":"","cover_image":"","cover_image_id":"","duration":"","filesize":"","filesize_raw":"","date_recorded":"","explicit":"","block":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[5,18,23],"tags":[997,664],"class_list":["post-4021","post","type-post","status-publish","format-standard","has-post-thumbnail","category-military-defense","category-weapons","category-world-war-ii","tag-anti-aircraft","tag-world-war-ii"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.8 - aioseo.com -->\n\t<meta name=\"description\" content=\"Background This document had been classified since 1939, and has never seen the light of day. 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In essence, when I filed the Mandatory Declassification Review (MDR) request to the Department of Defense (DOD), I had no idea what I was","twitter:image":"https:\/\/www.theblackvault.com\/documentarchive\/wp-content\/uploads\/2017\/02\/2017-02-19_19-38-29.jpg"},"aioseo_meta_data":{"post_id":"4021","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"breadcrumb_settings":null,"limit_modified_date":false,"ai":null,"created":"2023-04-05 19:58:29","updated":"2025-06-18 22:28:57","seo_analyzer_scan_date":null},"aioseo_breadcrumb":"<div class=\"aioseo-breadcrumbs\"><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/www.theblackvault.com\/documentarchive\" title=\"Home\">Home<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/www.theblackvault.com\/documentarchive\/category\/military-defense\/\" title=\"Military \/ Defense\">Military \/ Defense<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/www.theblackvault.com\/documentarchive\/category\/military-defense\/weapons\/\" title=\"Weapons\">Weapons<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\tReport of the Coast Artillery Board on Project No. 1153, Heavy Antiaircraft Gun, March 9, 1939\n\t\t<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"Home","link":"https:\/\/www.theblackvault.com\/documentarchive"},{"label":"Military \/ Defense","link":"https:\/\/www.theblackvault.com\/documentarchive\/category\/military-defense\/"},{"label":"Weapons","link":"https:\/\/www.theblackvault.com\/documentarchive\/category\/military-defense\/weapons\/"},{"label":"Report of the Coast Artillery Board on Project No. 1153, Heavy Antiaircraft Gun, March 9, 1939","link":"https:\/\/www.theblackvault.com\/documentarchive\/report-coast-artillery-board-project-no-1153-heavy-antiaircraft-gun-march-9-1939\/"}],"jetpack_featured_media_url":"https:\/\/www.theblackvault.com\/documentarchive\/wp-content\/uploads\/2017\/02\/2017-02-19_19-38-29.jpg","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.theblackvault.com\/documentarchive\/wp-json\/wp\/v2\/posts\/4021","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.theblackvault.com\/documentarchive\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.theblackvault.com\/documentarchive\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.theblackvault.com\/documentarchive\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.theblackvault.com\/documentarchive\/wp-json\/wp\/v2\/comments?post=4021"}],"version-history":[{"count":0,"href":"https:\/\/www.theblackvault.com\/documentarchive\/wp-json\/wp\/v2\/posts\/4021\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.theblackvault.com\/documentarchive\/wp-json\/wp\/v2\/media\/4022"}],"wp:attachment":[{"href":"https:\/\/www.theblackvault.com\/documentarchive\/wp-json\/wp\/v2\/media?parent=4021"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.theblackvault.com\/documentarchive\/wp-json\/wp\/v2\/categories?post=4021"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.theblackvault.com\/documentarchive\/wp-json\/wp\/v2\/tags?post=4021"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}