Delta Air Lines flight DL2983 and an incoming U.S. Air Force T-38 jet were given diversion instructions at Ronald Reagan Washington National Airport on Friday at 15:15 to prevent a possible collision.
The Delta Airbus A319 registered N342NB, carrying 131 passengers, was departing for Minneapolis-St. Paul when it received an onboard alert about a nearby aircraft.
The T-38 Talon jets were approaching for a flyover at Arlington National Cemetery.
Air traffic controllers intervened, issuing corrective instructions to both aircraft.
No injuries were reported, and the FAA is investigating the incident.