The EBR-200 thus changed its name to the Movimiento Bolivariano Revolucionario-200 (MBR-200—the "Revolutionary Bolivarian Movement-200"). The supplanting of the word "Army" (Ejército) with "Movement" (Movimiento) was intended to punctuate this shift. However, on 6 December 1989, Chávez along with other senior officers were abruptly arrested. They were brought before army command on charges of plotting a coup that was suspected by the government as planned for Christmas Day. They were accused of planning the assassination of high government officials, including President Pérez. Yet the officers were eventually released—due to lack of evidence. The government was reluctant to prosecute officers who were recognized in the military as among the best in their respective armed services. Nevertheless, all—including Chávez—were thereafter sent to posts far from the federal government in Caracas. Chávez was sent in 1990 to Maturín, where he was appointed the official in charge of civilian matters with the Ranger Brigade headquartered in the area. Chávez was later allowed to matriculate at the Universidad Simón Bolívar ("Simón Bolívar University") in Caracas, where he did graduate work in political science. He left without a degree. Chávez took courses until August 1991. Chávez re-entered military service with an initial re-posting to Cumaná, where a desk job awaited him. Chávez recalled feeling that such a seemingly dull and minor posting was beneath him. Thereafter, from 1991 to 4 February 1992, Chávez was again given his own command—the Maracay-based Colonel Antonio Nicolas Briceño 421st Airborne Battalion, 42nd Airborne Brigade, of the Venezuelan Army's 4th Armored Division (then the 4th Infantry Division). Such troops proved key in facilitating Chávez's various political ambitions. Chávez received the job when the battalion's former commander retired from the army; Chávez was his replacement as commanding officer. With a posting in Maracay, a city that is relatively near the national power structures in Caracas, Chávez's coup plans were no longer hindered by his own geographic isolation. Later, reports emerged of a dossier detailing all of Chávez's subversive activities. It had been produced just prior to Chávez's new Maracay posting—yet, the document was ignored by military intelligence. The major who had compiled it was ordered to undergo psychiatric evaluation. By 1991, Chávez and other MBR-200 leaders activated the coup plan codenamed after one of Chávez's heroes, Ezequiel Zamora—Plan Zamora. Yet despite planning for the coup's execution, Chávez and other MBR-200 leaders made precious little plans about what their putative future rebel government