The Defense Department has completed a new, long-term aviation inventory and funding report, and -- in a major break with prior practice -- will no longer make the document public, withholding from scrutiny investment plans for one of the government's largest portfolios that cost more than $50 billion annually to support about 14,000 aircraft. In December, DOD provided Congress a report required by law that aggregates aviation plans across the military departments and combatant commands and forecasts projected needs for...