Mayday in a Commercial Basement
A three-person engine crew is advancing a 1¾-inch line down an interior stair into a commercial basement to attack a fire in a storage room. The basement has one interior stair and no windows. Smoke is heavy and banking down the stairwell. The officer is on the line, with one firefighter behind and the driver at the top of the stair tending the line. At the bottom of the stair, the ceiling collapses and the officer's low-air alarm activates. Radio traffic on the tactical channel is congested with units requesting assignments. The officer cannot raise anyone on the radio after two attempts.
1. What should the officer do, and what should the driver at the top of the stair do, in the first 60 seconds?
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The officer should declare a Mayday immediately and clearly, using the standard format: "Mayday, Mayday, Mayday," followed by unit, name, location, and problem. The low-air alarm and the collapse make this an emergency regardless of whether radio contact has been established. The officer must transmit on the tactical channel and, if that fails, switch to the command channel or use the emergency button if equipped.
Simultaneously, the officer and the firefighter behind should stay together, stay low, and follow the hose line out - the hose is the lifeline. They should not abandon the line to search for an exit in zero visibility. If the officer is pinned or separated, the correct action is to activate the PASS device, conserve air by controlling breathing, and provide a rhythmic sound or light for rescuers.
The driver at the top of the stair must recognize the Mayday, immediately notify command on the radio with the officer's last known location, and stop feeding line. The driver should not leave the top of the stair unattended; that position is the anchor point for the rescue. The driver should sound the apparatus air horn - the standard emergency traffic signal - to clear the channel, then stand by to guide the rapid intervention team to the stair and to the line.
2. Command receives the Mayday. Describe how you organize the rescue and what you stop doing.
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Command must immediately acknowledge the Mayday by name and unit, then declare emergency traffic and clear the tactical channel of all non-emergency transmissions. Every other company holds in place until the channel is clear.
Assign a rapid intervention team if one is not already staged, and give it a specific assignment: enter through the interior stair, follow the hose line to the basement, locate the crew, and remove them. The RIT needs a charged backup line, forcible-entry tools, a thermal imager, and a designated safety officer tracking air supply and time.
Simultaneously, address the fire that caused the collapse. A collapse in a commercial basement with heavy smoke suggests the fire is not controlled. Command must decide whether to support the rescue with an attack line from a second access point or to hold the fire in place while the rescue proceeds. Do not commit additional crews into the same collapse zone without a plan.
Stop offensive operations elsewhere, stop ventilation that could worsen conditions on the rescue path, and stop non-essential radio traffic. Establish a single accountability point and account for every member. Request additional alarms and EMS. Notify the hospital of a potential burn or smoke-inhalation patient. Document the time of the Mayday, the RIT assignment, and the rescue outcome.