Severn, MD – Officers were attacked by a man and his parents when they responded to a report of the family arguing. When officers approached a car where the 20-year-old son and his parents were arguing, the son assaulted the officers. After police arrested him and two more officers arrived, police said the father pulled out a butcher knife and tried to stab an officer. Police drew their weapons and the father put the knife down. But the mother tried to grab the knife before assaulting the fourth officer. The son and the mother were charged with assault while the father was charged with attempted murder and assault.