From an article that mentions ADEX (referred to in the Wikipedia piece about Rex 84):

ADEX was the name of a FBI plan to identify theAmericans to roundup. The ADEX subversive list was maintained from 1967 to 1971. In Vietnam the ADEX approach was implemented in a program called Operation Phoenix. The number of South Vietnamese citizens executed in Operation Phoenix ranges between 21,000 and 70,000. The importance from ADEX is that we knowfrom our history that the people on the right side of issues like civil rights and protecting our democracy are put on FBI lists. We know from a Washington Post February 15, 2006 disclosure that the National Counterterrorism Center maintains a list of 325,000 people. The January 2005 Civilian Inmate Labor Program, an Army regulation related to rounding up Americans, is also available on www.freedomfromwar.org.

The shocking fact is there are already hundreds of prison camps in the United States. The vast majority of the prison camps are already staffed and surrounded by armed guards. These prison camps have railroad facilities, existing roads, and often an airport nearby. Where are they? Active and non-active military bases are ready to receive dissidents in part due to the January 2006 Halliburton contract enabling these facilities to quickly be "upgraded" to receive prisoners.

To fill the now empty prisons, FEMA only needs the president's signature on a proclamation, the attorney general's signature on a warrant, and a list of names attached to the warrant....

http://216.109.125.130/search/cache?p=adex+list+names+rex+84&ei=UTF-8&fr=sfp&x=wrt&u=www.freedomfromwar.org/Are%2520You%2520With%2520Us%2520Or%2520Against%2520Us.pdf&w=adex+list+names+rex+84&d=WKfNx0VuN5VE&icp=1&.intl=us