"Stand your ground" governs U.S. federal case law in which right of self-defense is asserted against a charge of criminal homicide. The Supreme Court of the United States ruled in Beard v. U.S. (158 U.S. 550 (1895)) that a man who was "on his premises" when he came under attack and "...did not provoke the assault, and had at the time reasonable grounds to believe, and in good faith believed, that the deceased intended to take his life, or do him great bodily harm...was not obliged to retreat, nor to consider whether he could safely retreat, but was entitled to stand his ground."[2][3]
that's the Castle Doctrine. The Florida law SYG applies anywhere you have the right to be. jmo