Without hesitating, Malachi Heilser shot and killed that man, who moments earlier had smashed a window from outside the home Heisler lives in with his mother, teen sister and his mother's boyfriend, according to The Tampa Tribune.
The man Heisler killed – although he said he didn't know it when he shot – was his own father, John Heisler.
Malachi, who hid his face with a bandanna as he spoke to reporters, said he thinks he prevented more people from being hurt that night. His father was arrested earlier in the year for being a felon in possession of a firearm, and Malachi said his mom had a restraining order against him.
John Heisler was reportedly wearing all-black fatigues, a ski mask and thigh holsters when he forced his way into the home.