When the presidio's soldiers balked at laboring on construction of a new wooden fort because such work was not, according to them, part of their duties, Rodrigo de Junco asked Philip II to send 30 slaves from Havana for that purpose.
In response to the soldiers' reluctance to participate in building a new wooden fort, which they deemed outside their job description, Rodrigo de Junco petitioned Philip II to dispatch 30 slaves from Havana to undertake the project.