US Spends Another $1Bln on More Engines for F-35 Jet - Pentagon

The US military have ordered more than $1 billion worth of new jet engines for their F-35 Lightning II Joint Strike Fighter, the most expensive aircraft project of all time, the Department of Defense announced.

The contract also covers components, parts and materials associated with the procurement of 38 F135-PW conventional take-off and landing propulsion systems for the US Air Force, Marine Corps and for 25 of the systems for foreign countries, the Defense Department added.
The controversial fighter jet has undergone a number of setbacks throughout its development. It has been beset by technical problems and cost overruns, pushing its expected total project cost to some $1.5 trillion over its 55-year lifespan, making it the most expensive US weapons program.