Rolls-Royce has been awarded a contract worth more than $100m by the US Air Force to purchase spare engines and parts for its C-130J fleet and to support so-called Foreign Military Sales (FMS) customers.Rolls-Royce AE 2100 engines power all C-130J aircraft in the US military and global fleets, while legacy C-130 aircraft are powered by Rolls-Royce T56 engines.The AE 2100 is part of the Rolls-Royce AE family of engines, with nearly 6,000 total engines delivered and more than 61m flight hours across the military and commercial fleets.Tom Hartmann, senior vice president of Customer Business at the FTSE 100 group, said: "Rolls-Royce AE 2100 engines provide the dependable, efficient power required by the US Air Force and our allies to complete their transport missions with the C-130J fleet."We also successfully manage propulsion support for the Air Force to keep its C-130J fleet operating at peak efficiency, while continuing to focus on affordability for our customers."