An improved portable fueling facility for aircraft or ground vehicles includes, in the disclosed embodiments, at least one storage tank, an outer tank for providing secondary containment about the storage tank, a number of saddle members for supporting the outer tank on a flat horizontal surface, and a pump for dispensing fuel. In one embodiment, a system is provided for suppressing combustion that might otherwise occur within the storage tank. To minimize heat transfer from outside the facility into the storage tank, fire-retardant insulation material may be positioned between the storage tank and the outer tank. The system also includes an environmentally controlled compartment for housing an electronic control system.