Every firefighter who goes on air is carrying a clock on their back. Most of us were taught how to don the pack fast. Far fewer of us were taught how to manage what’s inside it.

The low-air alarm is not your cue to leave

I’ve been in this service a long time, and the habit I see most is firefighters treating the low-air alarm like the end of the work period. They go in, they work, and when the bell starts ringing they start thinking about getting out. That’s backwards.

The low-air alarm means you’re already into your reserve. That air isn’t for finishing the job. It’s for the problem you didn’t plan on: the hose line that got hung up, the door that won’t open, the partner who got turned around, the long way out because the short way is gone. If you burn your reserve doing routine work, you’ve got nothing left when things stop being routine.

Air management isn’t a nice idea. It’s the difference between leaving on your terms and fighting your way out with nothing in the bottle.

Know your air before, during and after

Good air management starts before you ever go on air. It’s not complicated, but it has to be deliberate. Here’s what I want every crew doing, every time:

• Check your cylinder is full before you go to work, not after you’re already at the door.
• Check your gauge at the entry point and know what you started with.
• Check it again during the work, especially after hard effort like a stretch, a climb or forcing entry.
• Report your air to your officer when asked, and offer it when you notice it dropping faster than expected.
• Plan your exit so you’re out before the alarm, not because of it.

Remember that the trip out isn’t free. Stress, heat, smoke and hard work all burn air faster, and the way out can take longer than the way in. A crew that only watches the gauge on the way in is doing half the math.

Train it where it’s safe to get it wrong

Air management is a perfect training topic because you can build it into almost any drill. You don’t need a burn building or a big budget. You need packs, a little time and an instructor who’s paying attention.

Run a consumption drill so every firefighter learns what their own air looks like under hard work. Have them do a set of tasks on air and note how much they used. People are often surprised. The big, strong firefighter who thinks they’ll last forever is sometimes the first one to run low. That’s not a knock on anybody. It’s information, and it’s better to learn it on the drill ground than in a hallway full of smoke.

Then make air status part of the evolution. Stop the crew partway through and ask for air readings. Make the officer track them. Throw in a delay on the way out, like a blocked path or a tangled line, and see who planned for it. In the debrief, ask the question that matters: “When did you start thinking about getting out?” If the answer is “When my alarm went off,” we have work to do.

During live fire, instructors have to model this too. If we’re going in with the crews, we check our gauges, we call out our air and we leave on time. Students learn more from what we do in the burn than from anything we say in the classroom.

Officers set the standard

The company officer is responsible for the crew’s air, not just their own. That means knowing who went in with what, asking for readings during the work and making the call to rotate out before anyone hits reserve. It also means not letting pride make the decision. Nobody earns anything by being the last crew still inside with the bells ringing.

When an officer makes air checks routine, the crew stops seeing them as an interruption. They start reporting without being asked. That’s the culture you want, and it gets built one drill at a time.

The bottom line

Your air supply is the one resource on the fireground you can’t get more of once you’re inside. Know what you started with. Watch it while you work. Plan the trip out before you need it. Treat the low-air alarm as a warning that you’re already into your margin, not as a signal to start wrapping up. Train it until it’s a habit, because when the job goes sideways, the air you saved is the air that gets you home.

Stay safe, and train like it matters.

Eric Makowski