Units were dispatched to a motor vehicle accident involving 5 vehicles on Morris Rd. While the initial units were responding dispatch received further information that there is heavy entrapment so the assignment was upgraded. As Wagon 8 arrived on scene they confirmed there was 1 patient that was heavily entrapped and quickly worked with Squad 1 on extrication. Morris Road was completely shut down for an extended period. Two of the vehicles had heavy damage and the other 3 had moderate damage. There were a total of 5 adults and 2 pediatrics transported to Mary Washington Hospital with minor injuries.