[BC] Fire suppression

[Blake Bowers]

Very good point.  More than one Fire Engine has been destroyed this way.

> in small concentrations. One other thing to keep in mind, should you 
> even have to ventilate out an area that has had a halon release make 
> sure it doesn't travel into an area where any internal combustion 
> engines are running. If it does get ingested by a running engine, expect 
> to have to replace the engine in a few weeks. (It makes a acid with the 
> oil during combustion which eats the block up).
>