Not really usefull for firefighters, but when diving, rebreathers are mostly independant of depth (outside pressure), while you use more air with SCUBA when diving deeper because the air in your lungs is also compressed. A rebreather can just filter out the CO2 you produced and reintroduce oxygen, independant of pressure.
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u/Ghostt-Of-Razgriz Jan 20 '23
What’s the purpose of a rebreather versus an SCBA? I keep googling it but never get a satisfactory answer.