With the PMMG and the Federal Army in Minas Gerais under his command, Mourão carried out operations "Silêncio", controlling telecommunications, "Gaiola", arresting "suspicious elements" already monitored by the police, and "Popeye", moving troops against Rio de Janeiro and Brasília. This movement took time: the bulk of the "Tiradentes Detachment" formed to invade Rio de Janeiro and placed under the command of Muricy only arrived at the Paraibuna River, on the Rio de Janeiro border, at 17:00. The commander of the 10th Infantry Regiment did not join and had to be replaced. A battalion of the 12th Infantry Regiment sent from Belo Horizonte by Guedes did not arrive in Juiz de Fora until 22:00 and, moreover, lacking personnel.
