The Federal Aviation Administration also said it is evaluating aircraft arrival rates at Reagan National Airport, whose main runway is the busiest in the U.S.

The FAA is increasing air traffic control staffing at Ronald Reagan Washington National Airport near Washington, D.C., following a fatal January midair collision that killed 67 people.

The Federal Aviation Administration is sending a “stress management team” to meet with air traffic controllers at Ronald Reagan Washington National Airport and making other changes after a string of recent incidents.