In a statement, Delta Air Lines said Flight 1425 was diverted “after receiving an indication of an issue with one of the aircraft’s engines.” An earlier statement from Delta called the failure a “possible incident” — an instant classic in corporate understatements. The company declined to say whether passengers were in danger or describe what went wrong. Media reports indicated Delta offered passengers $30 food vouchers as they waited for a flight out of Raleigh, and CNN reported the plane was back in service Wednesday after the engine was replaced. The aircraft involved is an MD-88, the oldest in service...