A medical helicopter that crashed in a wooded area in Mississippi reported “a flight control problem” shortly before a Monday crash that killed all three people on board, federal authorities said. The pilot was going to attempt to land the helicopter in a field,

The National Transportation Safety Board uncovered more than 15,000 “near-miss events” between helicopters and jets at Reagan National airport in just three years leading up to the American Airlines jet and Army helicopter collision that killed 67 people.