Lockheed In A Soup! US Air Force Demands 'Evidence Of Capability' Over Block 4 Upgrades For F-35A Jets

The US Air Force wants evidence that Lockheed Martin will be able to produce Block 4 upgrades for the F-35A fighter jet before boosting the plane's purchase,  Air Force Secretary Frank Kendall said on May 13.

https://eurasiantimes.com/lockheed-in-a-soup-us-air-force-demands-evidence-of-capability/