Editing Ent Air Force Base (section)

===NORAD===
[[File:1958 Ent AFB - NORAD HQ.png|thumb|Ent Air Force Base, 1958]]
{{Main|North American Aerospace Defense Command}}
The North American Air Defense Command (NORAD) was established and activated at the base on 12 September 1957. This command is an international organization, taking operational control of [[1 Canadian Air Division|Canadian Air Defense Command]] air defense units and United States Air Defense Command air defense units. The first NORAD Agreement was drafted. Partridge was Commander-in-Chief, CONAD also became commander of NORAD.{{r|NORAD History}}{{rp|4,16}} [[Royal Canadian Air Force]] Air Marshal [[Roy Slemon]] became deputy commander, NORAD.{{r|NORAD History}}{{rp|4}} The official agreement between the two countries was signed 12 May 1958.<ref>{{cite web | url=http://www.norad.mil/Newsroom/tabid/3170/Article/1356/norad-celebrates-50th-anniversary.aspx | title=NORAD celebrates 50th anniversary | author=NORAD and USNORTHCOM Public Affairs | publisher=North American Aerospace Defense Command (NORAD) | date=21 March 2008 | access-date=11 February 2015 | archive-url=https://web.archive.org/web/20150212062344/http://www.norad.mil/Newsroom/tabid/3170/Article/1356/norad-celebrates-50th-anniversary.aspx | archive-date=12 February 2015 | url-status=dead }}</ref>

In 1958, the base put $36,904,558 into the Colorado Springs economy in the form of pay to 3,639 military and 1,222 civilian personnel and dependents allowances, which was more than $7 million more than the previous year. These numbers exclude individuals that work for 15 U.S. industries—such as [[Boeing]] and [[Lockheed Corporation|Lockheed Aircraft]]—on Ent.<ref>{{cite news | url=http://more.ppld.org:8080/SpecialCollections/Index/ArticleOrders/192031.pdf|title=Adds $36 million in '58 to region's economy |date=19 February 1959 | work=The Gazette| location=Colorado Springs, Colorado | page=1:6 | access-date=11 February 2015 }}</ref> Due to improvements in radar technology, the Ground Observer Corps was inactivated on 31 July 1959.{{r|Lineage}}

The NORAD commander issued instructions on 21 April 1961, concerning the 425L command and control computer system operational philosophy, including use by NORAD and component personnel, NORAD entry to sufficiently enable him to evaluate indications presented, the requirements for human judgment in determining the
validity of individual system indications, and identification of data as to source system.{{r|NORAD History}}{{rp|18}}