Turbine Fuel, Low Volatility, JP-7, commonly known as JP-7, was referred to as Jet Propellant 7, to MIL-DTL-38219[2] is a specific jet fuel that was developed for the United States Air Force (USAF), for use in its supersonic military aircraft that required a jet fuel with a high flash point, and high thermal stability. 

The SR-71 would be a very short-ranged aircraft were it not for air refueling, limited to around 2,000 NM. Multiple air refuelings extended the range of the aircraft to the limits of crew endurance.