<a href="https://en.wikipedia.org/wiki/Cold_War" id="mwAXg" rel="mw:WikiLink" title="Cold War">Cold War</a>: <a class="mw-redirect" href="https://en.wikipedia.org/wiki/North_American_Aerospace_Defense_Command#False_alarms" id="mwAXk" rel="mw:WikiLink" title="North American Aerospace Defense Command">Nuclear false alarm</a>: The <a class="mw-redirect" href="https://en.wikipedia.org/wiki/North_American_Aerospace_Defense_Command" id="mwAXo" rel="mw:WikiLink" title="North American Aerospace Defense Command">NORAD</a> computers and the Alternate National Military Command Center in <a href="https://en.wikipedia.org/wiki/Fort_Ritchie,_Maryland" id="mwAXs" rel="mw:WikiLink" title="Fort Ritchie, Maryland">Fort Ritchie, Maryland</a> detected purported massive <a href="https://en.wikipedia.org/wiki/Soviet_Union" id="mwAXw" rel="mw:WikiLink" title="Soviet Union">Soviet</a> nuclear strike. After reviewing the raw data from satellites and checking the <a href="https://en.wikipedia.org/wiki/Early-warning_radar" id="mwAX0" rel="mw:WikiLink" title="Early-warning radar">early-warning radars</a>, the alert is cancelled.