A Wisconsin woman is behind bars for allegedly purposely mowing down two older people with her car before bragging about it on social media and then, attacking a random man with a knife. Katelyn A. Harmon, 25, has been charged with two counts each of attempted murder in the first degree, failure to report a crash involving personal injury, aggravated battery causing great bodily harm, and four counts of aggravated battery with a deadly weapon, according to the Lake County State's Attorney's Office.