FOX NEWS -- According to a report, the controller who was handling helicopters was also instructing planes that were landing and departing from runways.

An internal preliminary report from the Federal Aviation Administration (FAA) reportedly showed that the number of staff members working at the air control tower at Ronald Reagan National Airport in Arlington, Virginia, was "not normal for the time of day and volume of traffic."

On Wednesday night, an American Airlines plane and Army helicopter collided near Reagan National Airport outside of Washington, D.C., and all 67 people onboard both aircraft are presumed to be dead.