RE: [SGish] APC question

>> One thing you should consider is that most if not all modern U.S.
tracks
>> (at
>> least M1, M2-3 {bradleys}, 113 and variants) have a fire suppress
system
>> that is triggered by fire or explosion that contains halon, a gass
that
>> bonds with O2 makeing it unavalable to fuel the fire/explosion. Oh
and
>> unadvalable to the crew/passangers so it is a real go Idea to get
out.
<snip>
> Newer systems use a mixture of gasses including nitrogen and CO2 but
are
> hard design for non fixed installations as you have to get the o2
levels
> low enough to not support combustion but high enough to support
> life....(strangely the CO2 is used to get the human breathing reflex
to
> take faster breaths and so survive in low O2 situations!)
> (ex Fire Protection Engineer)

Someone said recently that we have on this list an expert for pretty
much
anything. I was sceptical - lots of military folk sure, scientists yes,
lots
of general knowledge folk...

Well, I stand corrected. :)