After all the talk about extinguishers I was thinking about Halon exting...(I can't type that again)  and what do you know?  I found one at a garage sale for $1!  It is Halon but it is small.  My question is this... This is one of those small car/boat sized ones--maybe 6 inch tall by two inch diameter.  Is this sufficient for anything realistic?  Would I need to be a sharpshooter or what?