The New York Times Company January 23, 2005
In Terror Fight, Domestic Roles for U.S. Troops
By Eric Schmitt
<snip> As part of the extraordinary army of 13,000 troops, police officers and federal agents marshaled to secure the inauguration, these elite forces were deployed under a 1997 authorization that was updated and enhanced after the Sept. 11 attacks, but nonetheless departs from how the military has historically been used on American soil.
These commandos, operating under a secret counterterrorism program code-named Power Geyser, were mentioned publicly for the first time this week on a Web site for a new book, "Code Names: Deciphering U.S. Military Plans, Programs and Operation in the 9/11 World," (Steerforth Press), by William M. Arkin, a former Army intelligence analyst. <snip>
The role of the armed forces in the United States has been a contentious issue for more than a century. The Posse Comitatus Act of 1878, which restricts military forces from performing domestic law enforcement duties, like policing, was enacted after the Civil War in response to the perceived misuse of federal troops who were charged with policing in the South. <snip>
In the online supplement to his book ( codenames.org /documents.html ), Mr. Arkin says the contingency plan, called JCS Conplan 0300-97, calls for "special-mission units in extra-legal missions to combat terrorism in the United States" based on top-secret orders that are managed by the military's Joint Staff and coordinated with the military's Special Operations Command and Northern Command, which is the lead military headquarters for domestic defense. <snip>
http://www.globalsecurity.org/org/news/2005/050123-terror-fight.htm