Chávez began preparing for a military coup d'état known as Operation Zamora. The plan involved members of the military overwhelming military locations and communication installations and then establishing Rafael Caldera in power once Pérez was captured and assassinated. Chávez delayed the MBR-200 coup, initially planned for December, until the early twilight hours of 4 February 1992. On that date five army units under Chávez's command moved into urban Caracas. Despite years of planning, the coup quickly encountered trouble since Chávez commanded the loyalty of less than 10% of Venezuela's military. After numerous betrayals, defections, errors, and other unforeseen circumstances, Chávez and a small group of rebels found themselves hiding in the Military Museum, unable to communicate with other members of their team. Pérez managed to escape Miraflores Palace.Then Chávez gave himself up to the government. Fourteen soldiers were killed, and fifty soldiers and some eighty civilians injured during the ensuing violence.