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.

In the wake of January's deadly midair collision, several recent close calls and a fight in the tower at Reagan National Airport, the FAA is making changes. The agency said it is increasing supervision and support for staff while reviewing arrival rates,

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.