On the above date just before 1300hrs, Station 23 was alerted to assist stations 22 & 20 on an MVC with entrapment on I495 NB in the area of Exit 1. Rescue Engine 23 with a crew of 3 under the command of Captain Mills quickly responded. Rescue Engine 23 arrived just after Rescue 20 and immediately went to work stabilizing the vehicle and extricating the patient. The crews of Rescue 20 and Rescue Engine 23 removed two doors and the "B" post to free the trapped patient. The patient was extricated in around 15 minutes and the units cleared shortly after.