At 6:17PM Dorchester Central dispatched units for A MOTOR VEH. COLLISION at 2033 HUDSON RD in the Cambridge 1-11 Box Area. Captain 1-3 arrived on location with A rear end style collision (pick up v/s Box Truck) with confirmed entrapment and established command. Rescue 1-1 staffed with 4 arrived on location as the Rescue Group for the extrication. Per Command Trooper 6 was dispatched to the scene as this became an extended extrication. At 7:32PM with the patient flown to Shock Trauma and the situation under control command was terminated and all units were placed in service. One Firefighter was transported to the University of Maryland Shore Medical Center at Dorchester Priority 3.