If the IC decides an additional alarm is needed for a single family residence, it should be called for when?

• A. Immediately
• B. After 10 minutes
• C. After roll call
• D. When the incident is under control

Answer: (A)

When the IC decides an additional alarm is needed for a single-family residence, it should be called immediately. Getting extra crews and equipment on scene without delay is essential because fires in homes can grow rapidly and hidden spaces or concealed fuel can cause sudden changes in conditions. Early escalation ensures enough personnel for interior search, ventilation, water supply, and laddering, and it also allows for a rapid RIC if needed. Waiting or delaying the call—such as after 10 minutes, after roll call, or only when the incident is already under control—reduces the chance to establish a safe, effective offensive or defensive operation and can put firefighters at greater risk.