Rex 84
Rex 84, short for Readiness Exercise 1984, was a classified scenario and drill developed by the United States federal government to detain large numbers of United States citizens deemed to be "national security threats", in the event that the president declared a National Emergency. The plan was first revealed in detail in a major daily newspaper by reporter Alfonso Chardy in the July 5, 1987 edition of the Miami Herald. Possible reasons for such a roundup were reported to be widespread opposition to a U.S. military invasion abroad, such as if the United States were to directly invade Central America. To combat what the government perceived as "subversive activities", the plan also authorized the military to direct ordered movements of civilian populations at state and regional levels, according to Professor Diana Reynolds.Existence of a master military contingency plans (of which REX-84 was a part), "Garden Plot" and a similar earlier exercise, "Lantern Spike", were originally revealed by journalist Ron Ridenhour, who summarized his findings in an article in CounterSpy.Transcripts from the Iran-Contra Hearings in 1987 record the following dialogue between Congressman Jack Brooks, Oliver North's attorney Brendan Sullivan and Senator Daniel Inouye, the Democratic Chair of the joint Senate–House Committee:
Contingency plans by the US Government for rounding up people perceived by the government to be subversive or a threat to civil order have existed for many decades.