On Thursday 4 November at 18:54 the Sussex EOC dispatched a box assignment for a reported fire in the basement of a residence. Units from Dagsboro & Frankford VFD's along with SCEMS Medic 105 were put on the assignment. 1st due Engine 731 was on the street at 18:55 under the command of Asst. Chief Elliott with a staffing of (5) five and advised by EOC this was believed to be a working alarm. Engine 731 arrived at 18:55 with light smoke showing, with Asst. Chief Elliott as IC. Engine 761 was the 2nd due engine and arrived seconds behind Engine 731. IC tasked the crew from Engine 731 to make entry and investigate. Engine 732 arrived at 18:57 with Chief 73 (Glenn) and ordered to report to the manpower pool. Chief Glenn was placed as Operations. With entry made crews were met with heavy smoke conditions. IC had the crew off Engine 732 pull a 1 3/4" line to the rear door of the residence. Rescue Co. 73 arrived and was ordered to assist Engine 761 with a primary search, while crews from Engine's 731 & 732 made entry to the basement. It was discovered that the fire and burned through a water pipe, which acted like a sprinkler and extinguished the majority of the fire. Crews also discover a fuel oil line feeding the heater had burst and flooded the basement with approx. 30-50 gallons of fuel oil. With the primary search negative, crews began overhaul. IC placed the incident under control, holding all units at 19:33. With a extensive overhaul and salvage needed on the basement IC requested a Engine Co. be transferred to Dagsboro, with Frankford's OIC requesting the same. EOC alerted the Millsboro VFD to transfer to Dagsboro & Selbyville VFD to transfer to Frankford. Crews secured the fuel leak and spill & overhauled the basement. IC placed units in service as ready & terminated the command at 20:46. Cause of the fire is under investigation by DSFMO. Units Operating on Scene: Engine 731, Engine 732, Engine 761, Rescue/Engine 763, Rescue Co. 73, Tanker 73, Amb. B-76, Amb. A-76, SCEMS Medic 105, DPD, SCFP, DSFMO Cover-up Units: Millsboro, Engine 831 to Dagsboro & Selbyville, Engine 884 to Frankford