Positive pressure attack

We use positive pressure attack and it works when applied correctly.  Know when and when not to use it and it can be effective.  Make sure you have an exit for the smoke.  If not you are just adding to the fire.  Also be careful if the attic is already involved.  As with all firefighting ppv attack is a tool if you try to use it assess if it worked if not try something else.  If you are just turning a fan in at every fire without even thinking of the consequences you are setting yourself up for disaster.
Talking points
wind driven fires (can the fan overcome)
exit holes
attic fires
entry point