Auto Accident with Entrapment at Minnieville Rd and Delaney

W517 dispatched to multi vehicle accident with one confirmed entrapped (By Prince William Police on scene) individual at Minnieville Rd and Delaney. W517's crew consisting of D/O Tim Trax 'Sr', Sgt David Glinski, FF David Talley and Recruit Johnny Trax. Arrived on scene and shut down two lanes heading Eastbound on Minnieville as we had two vehicles involved with one on it's passenger side. Quickly stabilized vehicle, as we had citizens (Off duty paramedics & EMT's from outside jurisdictions) trying to keep the vehicle on it's side and not flip completely over. Advised BC507F (Asst. Chief Hoffman) that we had one confirmed entrapment with 3 other BLS injuries. Rescue Squad 510 arrived on scene and provided extrication to free the patient. A517a was responsible for 3 patients out of the one vehicle with 2 being transported as BLS and 1 being patient refusal. M553 transported the subject from the over-turned vehicle.