The F-35 joint program office expects to have fielded a near-term engine fix on its 19 test aircraft by the end of December. F-35 Program Executive Officer Lt. Gen. Chris Bogdan told reporters this week that the JPO will begin installing one of two validated, near-term fixes on its test aircraft within the next few weeks. The program is also working to gain approval from Navy and Air Force airworthiness authorities to approve both solutions for the more than 100...