When forming entry teams for interior operations, what is the recommended team size?

• A. A single firefighter
• B. Two or more firefighters
• C. Three or more only in large buildings
• D. Teams should be exactly two

Answer: (B)

Entering hazardous spaces requires at least a partner. The main idea here is safety through teamwork: one firefighter inside can’t reliably perform tasks, monitor conditions, and stay protected without a partner to back them up, call for help, or assist with equipment. A two-person interior team allows tasks to be shared—one person can advance the line or search while the other maintains awareness of conditions, communicates with outside, and provides rapid assistance if things go wrong. This setup also supports accountability and rescue readiness, since a second person is always there to respond if a teammate needs help. Larger teams are used as the situation demands, but the minimum that ensures safe interior operation is two or more.