Sussex EOC alerted the DVFD, Frankford VFC & the Millville VFC for a reported structure fire at the given address. Asst. Chief C. Dorey arrived with in minutes of the dispatch and advised EOC that he had a 10x10 out building fully involved & to reduce the assignment to just the DVFD. Engine 1 arrived with Chief Furbush establishing IC. Captain Blades lead the crew off with a 1 3/4" smooth bore & began flowing on the propane tank approx. 5 ft from the building. Engine 2 was staged on Armory Rd due to road conditions & its crew sent back to assist with overhaul. Crews operated for approx. 1 hr before turning the scene over the FMO.