<div class="description">
Title from item.; Additional text from item: Faster than the speed of sound aircraft make a mockery of split second human reactions. Ever since the Jet's first appearance in 1944, Ordnance designers have groped for an answer. A combination of research, design and engineering "know-how" brought forth the "Skysweeper", a one package 75MM AA Gun electronically combining radar, computer and director with the chassis and gun. Development, production and procurement of "Skysweeper" is a responsibility of the 138-year old Watertown Arsenal.; Date from item or accompanying material.</div>
24 January 1954<div style="display: none;">date QS:P571,+1954-01-24T00:00:00Z/11</div>
This file was contributed to Wikimedia Commons by <a href="https://www.wikidata.org/wiki/Q29982657" class="extiw" title="d:Q29982657"><span title="regional archival facility of the National Archives and Records Administration">National Archives at Boston</span></a> as part of a cooperation project. The donation was facilitated by the <a href="https://en.wikipedia.org/wiki/Digital_Public_Library_of_America" class="extiw" title="w:Digital Public Library of America">Digital Public Library of America</a>, via its partner Digital Commonwealth.<span style="text-align:left">
<ul><li><a rel="nofollow" class="external text" href="https://ark.digitalcommonwealth.org/ark:/50959/2n49vd59h">Record in source catalog</a></li>
<li>DPLA identifier: <a rel="nofollow" class="external text" href="https://dp.la/item/1441be244bc7287ba3669cdc3285fdbd">1441be244bc7287ba3669cdc3285fdbd</a></li>
<li>National Archives at Boston identifier: Local accession: 2658417; Local other: 635-2231</li></ul></span>