George Zimmerman’s brother Robert Zimmerman Jr. explained to Piers Morgan that his brother was confronted with a kill-or-be-killed scenario the night he shot and killed 17-year-old Trayvon Martin.

A night after his father Robert Zimmerman, an ex-judge and Vietnam veteran, told Fox, “It’s my understanding that Trayvon Martin got on top of him and just started beating him,” his other son also spoke out in defense of his brother’s actions.