OMAHA, Neb. (AP) — Officials say they plan to conduct safety investigations of all the major freight railroads over the next year. That’s after the Federal Railroad Administration recently completed a review of Norfolk Southern’s safety culture. A report will be released soon on what investigators found at Norfolk Southern after the fiery February derailment that prompted the evacuation of half of East Palestine, Ohio. The crash sparked intense interest in railroad safety nationwide and prompted several proposed reforms in Congress. Railroad unions have been raising concerns that operating changes and deep cuts the railroads have made over the past six years have made trains riskier. But the railroads maintain they haven’t sacrificed safety as they became more efficient.