Chesapeake City, MD – Maryland Deputy State Fire Marshals are investigating a boat explosion that injured nine people Saturday afternoon at Schaefer’s Canal House in Cecil County. The explosion was reported at approximately 4:20 p.m. at the waterfront restaurant and marina in Chesapeake City. Volunteer Fire Company #1 of Chesapeake City, Cecil County Paramedics, IAFF Local 4645 and several neighboring fire and EMS agencies responded to the scene. Four victims airlifted after explosion Authorities said seven of the injured were aboard the boat at the time of the explosion, while two others were hurt on a nearby dock. Four patients…