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> Their failure maybe was not preventing Goulart's leave, not sure if they even had the capacity for that
They didn't, all they could move were ECEME officers (good examples of B-teams and C-teams) or police. Goulart's exit was unannounced and done in a few moments so it could only be prevented with an unrelated attack on the airport a couple hours earlier, but the coupists wouldn't want to clash with the Air Force nor get crushed by Âncora's likely reaction.

There's this bit:
> Wait-and-see is the attitude that usually favors a coup
Which describes well the IInd and IVth Army's attitudes, it's been remarked their neutrality favored the coup.