On the Morning of May 31 at 0220Hrs, Cheswold Fire Company was dispatched to an exposion in Pinewood Acres on Aspen Dr. Command 43 with Chief Brown was advised while enroute that DSP was onscene with 1 mobile home levelled and 4 others damaged. Chief Brown arrived to find 1 mobile home levelled with some fire and a second mobile home with major damage and fire. Chief Brown called for Structure Fire Upgrade that brought a Ladder Company from Dover and a Rescue Company from Leipsic. As units began to extinguish the 2 fires, other units started searching other mobile homes for any injuries and damage to other units in the area. A Tanker from Leipsic was special called due to low water pressure from the hydrants. 4 People were transported to Kent General ER for evaluation of minor injuries. In total, 30 Mobile homes and multiple vehicles were damaged. Units onscene- Command 43(15) 432, R43, 433, A and B43, 4310, L461, 464, 535. 536, 537, KM5 and 6, FM6, 12, 19 and Arson 1, Kent County Building Inspectors, and Red Cross