What is the minimum staffing level for Heavy tanker?

• A. 0
• B. 2
• C. 1
• D. 3

Answer: (C)

The essential point is how many personnel are needed to get a Heavy tanker on the road and delivering water. One firefighter is enough to drive the vehicle, start and operate the pump, and manage basic water supply for initial response. Having more crew members improves safety and allows handling additional tasks or complex pumping, but they aren’t required to meet the basic operational need. A driver alone can get the job done; zero isn’t feasible, and two or three would exceed the minimum for basic operation.