For people with land lines and network interfaces on the side of their house — if someone can sneak up and connect to the interface, then the ultimate spoof Swat call can be made.
Of course this is evil of the Swatters, but it is to wonder afresh, how much do we need the glut of Swat we have today?
Defeat spoofing by using STRONG encryption.
What about MagicJack?
Somewhat related:
Foremost, have a policy that the Second Amendment defends the First (and all the rest)
It would be good to be in a state with a strong ‘castle’ doctrine.