Boeing beats Lockheed for $9.2-billion Air Force trainer program

Boeing Co. defeated Lockheed Martin Corp. to win its third prize in a recent flurry of defense contracts, snaring a U.S. Air Force contest valued at as much as $9.2 billion to build training jets to hone the flying skills of future aviators.

The 351 to 475 training aircraft and 120 ground-based…