At 0145 hrs Sussex EOC struck a box assignment for a structure fire sending the Indian River, Millsboro & Lewes Fire Departments along with Mid-Sussex & Sussex County EMS. Heavy fire was visible as units were checking on the air, Command 80 (Faulkner) requested additinal resources while still enroute to the seen. This request brought Engine 731 & Tanker 73 as well as units from the Rehoboth Beach & Milton Fire Departments. Units operated on scene until approx. 0800 before returning to service.