Wearing dark spectacles and carrying forged papers, Broz posed as a middle-class technician in the engineering industry, working undercover to contact other CPY members and coordinate their infiltration of trade unions.
Iført mørke briller og forfalskede papirer udgav Broz sig for at være en middelklasse-tekniker i maskinindustrien og arbejdede undercover for at kontakte andre CPY-medlemmer og koordinere deres infiltration af fagforeningerne.