The investigation into a January midair collision that killed 67 people near Washington, D.C., revealed an alarming number of recent close calls just outside the nation’s capital.

The Federal Aviation Administration (FAA) has announced the permanent closure of a helicopter route near Washington DC's airport where a fatal midair collision involving a passenger jet and an Army helicopter resulted in the tragic deaths of 67 people.

The Federal Aviation Administration says helicopters will be permanently banned from flying near Washington, D