Some Girl Scouts notified Salem, Oregon, police of a man using fake $20 bills to buy one box of cookies and get real currency for change. Two separate scout troops reported the man and the counterfeit money to police this month.
… In one of the incidents Ava, a 13-year-old scout, spotted the counterfeit money and thought, “This does not feel right.” Ava waited until the man left to alert her mom, who called police. With assistance from Walmart security, police were able to scan surveillance video and identify the suspect.