Federal investigators investigating the deadly midair collision near Ronald Reagan Washington National Airport described a strained, high-stress air traffic culture where controllers relied on experience,

In Washington on Wednesday, the National Transportation Safety Board held the first of three days of hearings into a deadly midair collision in January that killed 67 people.

The National Transportation Safety Board (NTSB) is meeting Friday for its final day of hearings looking into the January crash between an Army helicopter and American Airlines plane near Washington, D.