The danger does not end when the flames are out, and this last lesson is about the part almost no fire-safety class covers. Two things are true after a fire. The building is more dangerous than it looks, and the people are in worse shape than they feel. A fire-damaged structure can have weakened floors and stairs, electrical hazards, and carbon monoxide still pooling in enclosed spaces, and smoke exposure can produce serious injury with almost no early symptoms. On top of that, the household has to start making practical decisions on the worst night of their year, which is exactly when nobody makes good ones. So this lesson covers the first minutes, the medical part, and the first few days, in that order. Knowing the sequence in advance is what stops the hours after a fire from adding a second emergency to the first.

The first minutes have four steps and they are all about information and distance. Account for everyone at your meeting place, by name and out loud, so you know for certain rather than assuming somebody came out another door. If anyone is missing, tell the fire crew who and where you last saw them, and let them go in. Call nine one one if it has not already been done, and do not assume a neighbour did it. Then move back, further than feels necessary, because windows fail outward, structures collapse outward, and the crews need the space to work and to get their apparatus in. And do not re-enter, for anything, until the fire department tells you the building is safe. That last one includes the period after the visible fire is out, which is when it is most tempting. Fires reignite from hidden hot spots in walls and voids, and a floor that held your weight this morning may not now.

Get checked, even when nobody looks injured. Smoke inhalation is the reason. The gases in smoke, carbon monoxide chief among them, can cause serious harm with very little to see at first, and symptoms including headache, confusion, nausea, and shortness of breath can develop hours later. Anyone who was in the smoke should be assessed, and that includes people who walked out feeling fine, and especially includes children, older adults, anyone pregnant, and anyone with a heart or lung condition. Hoarseness, a persistent cough, soot around the mouth or nose, or any confusion are signs to act on immediately. For burns, cool the area with cool running water for at least ten and up to twenty minutes. Not ice, which damages tissue further, and nothing from the kitchen cupboard: no butter, no oil, no toothpaste. Cover loosely with a clean non-fluffy cloth or cling film, and seek medical care for any burn that is blistered or deep, larger than the palm of the injured person's hand, or on the face, hands, feet, genitals, or over a joint.

Once everybody is safe and medically cleared, the rest is practical, and doing it in order helps on a day when nothing feels orderly. Contact your insurer or your landlord as early as you can, and ask specifically what they need documented and whether emergency accommodation is covered, because many policies include it and many people never claim it. Reach out to a disaster relief organisation such as the Red Cross for immediate needs, which typically means somewhere to sleep, clothing, food, and help beginning the paperwork. Get the fire department's incident number and a copy of the report when it is available, because insurers and landlords will both ask. Secure what documents you can, and start replacing what you cannot, identification and insurance papers first. Photograph the damage before anything is moved or cleaned. And have professionals check the electrical supply, gas, water, and heating before anything is switched back on, and treat food, medicines, and cosmetics exposed to heat or smoke as unsalvageable.

Let us bring the whole class together, because five lessons reduce to three ideas. First, prevent the common causes, because a handful of them account for most home fires and the habits that stop them are small ones. Second, get early warning and a plan you have actually walked, because working alarms roughly halve the risk of dying and a practised route is what you will fall back on when there is no time to think. Third, get out and stay out, and call from outside. That is the class. Every other detail we covered, the three feet of clearance, month year decade, feeling the door, the lid on the pan, the closed door if you are trapped, hangs off one of those three. If you remember the three and forget the details, you will still make good decisions. If you remember the details and forget the three, you may not.

If you want to go further, these are the sources worth your time, and all of them are free. They have printable escape plan grids you can fill in with a household, monthly checklists you can put on a fridge, alarm placement diagrams, and guidance written for specific situations: apartment buildings, homes with somebody who has limited mobility, families with young children. Two suggestions on using them. Take the escape plan template rather than reading about escape plans, because the template is the thing that turns intent into a drawn plan on the wall. And if your household includes somebody whose needs the general guidance does not cover, look for the specific page rather than adapting the general one yourself, since these organisations have already done that work.

That completes Residential Fire Safety. Here is the one thing to do today, and it should take under fifteen minutes. Press the test button on every smoke alarm in your home, and while you are up, check the manufacture date on the back of each one. Then walk your two ways out of the room where you sleep, and open the window if that is the second way, to be sure it opens. If you live with other people, tell them where the meeting place is. That is it. Everything in this class beyond those few minutes is refinement. The households that come through a fire well are almost never the ones who knew the most. They are the ones who had working alarms and had walked the route. Thank you for taking this class, and please pass it on to the people you live with, because a plan only one person knows is not yet a plan.