This morning while enroute to his CALS shift M102 (PMIC Schapiro) came across a MVC with entrapment at the intersection of Rt-4 and Plum Point. M102 notified Calvert Communications and requested the assignment. M105 (PMIC Fleming) responded from CALS as the 2nd medic. CALS members assessed 4 patients and worked with BLS crews on scene to determine the patients destinations.