Final Answer:
Installations are authorized an additional station Chief for each major piece of firefighting apparatus in service.
Step-by-step explanation:
Firefighting installations require effective management to ensure readiness and response capabilities. The authorization of an additional station chief is directly tied to the number of major firefighting apparatus in service. Major firefighting apparatus includes essential vehicles like fire engines, ladder trucks, and specialized firefighting vehicles. The allocation of an extra station chief for each major apparatus is a strategic decision to enhance leadership and coordination during emergency responses.
Having an additional station chief for each major apparatus allows for efficient supervision, command, and control during firefighting operations. This organizational structure ensures that each critical firefighting asset has dedicated leadership, contributing to the overall effectiveness and safety of firefighting efforts in a given installation.