To the best of my knowledge, only Palo Alto Networks enables the enterprise to re-establish a positive enforcementmodel between networks of different trust levels.
The purpose of a firewall is to establish a positive enforcementmodel, i.e. limit traffic between networks of different trust levels to that which is allowed and block everything else.
Together, your success at thwarting terrorist attacks -- the strong intelligence you've gathered and the hard-nosed investigations you've pursued -- has proved to be a model for law enforcement officials across the country, and for that you should all be extremely proud.