How is the Pentagon able to call the National Guard up for active duty as they did in 2003[1] and other occasions if they are separate from the Federal armed forces?<p>[1] <a href="https:&#x2F;&#x2F;www.wsws.org&#x2F;en&#x2F;articles&#x2F;2003&#x2F;10&#x2F;ng-o04.html" rel="nofollow">https:&#x2F;&#x2F;www.wsws.org&#x2F;en&#x2F;articles&#x2F;2003&#x2F;10&#x2F;ng-o04.html</a>