An ongoing legal dispute between the U.S. government and Lockheed Martin over intellectual property rights has emerged as the source of a 2.5-year-long delay in activating a key F-35 system required to complete initial operational testing and make a full-rate production decision.

The U.S. Air Force admits that the service and Northrop Grumman underestimated the complexity of the software upgrades required for the B-2 Defensive Management System Modernization.

The head of U.S. Air Force acquisition says one lesson learned from the light attack experiment is the need for special operators to have an armed overwatch capability.