As reported on tonight's news, a St. Louis County off-duty police officer was approached on his property by two 18-year-old men, one of whom had a gun. Initial reports are that they demanded his car, and after a struggle, the officer shot and killed one of the carjackers.
It was reported this happened in Florissant. I'll post a link once it's been published.
I classify this as good because the officer survived.