In October 2005, Florida enacted new a type of "stand your ground" law. Now, Florida residents can use deadly force in their homes even if they don’t fear physical injury. They can fire on anyone who unlawfully, forcibly enters their home. And the definition of "home" now includes vehicles, so a Florida resident can use deadly force against anyone who forcibly, unlawfully intrudes in their car or on their boat.
The Florida law also extended "stand your ground" rights beyond the home and car. A Florida resident outside their home can now use deadly force if they have a reasonable fear that someone is about to use deadly force against them. In other words, in Florida, outside your home, there is no longer a duty to retreat when faced with deadly harm.
When we say that a resident can use this law, we mean that the resident can invoke it as a defense from prosecution. And if law officers disagree, the person can be charged with a crime and will have to prove their "stand your ground" defense in court.