An air show in the US state of Texas saw the collision and crash of two historic World War Two aircraft.
The footage shows the planes colliding at a low altitude, splitting one of the planes in half. The impact on the earth is visible as a fireball.
The aircraft, one of which was a Boeing B-17 Flying Fortress, was participating in a memorial air show close to Dallas.
Although the number of passengers in the two aircraft was not immediately known, two victims have been identified.
Allied Pilots Association, which represents American Airlines pilots, reported that two of its former members, Terry Barker and Len Root, were among those killed in the incident.
The Federal Aviation Administration announced that it will look into the Saturday crash at the Wings Over Dallas Airshow, which bills itself as the country’s top World War II aviation show.
4,000–6,000 spectators attended the three-day event, which was conducted in honor of Veterans Day, which fell on a Friday.
Mayor of Dallas Eric Johnson referred to it as an “awful tragedy”.
He added that there had been no reports of injuries on the ground but that the exact number of casualties was yet unknown.
According to the event website, six aircraft were slated to do a flyover display on Saturday.
During World War II, the B-17 bomber was crucial to the victory of the air campaign against Germany.
The second aircraft was a P-63 Kingcobra, a fighter deployed in the same conflict but exclusively by the Soviet Air Force.
Hank Coats, from the Commemorative Air Force, which organized the event, claimed that the B-17 typically has a crew of four to five people, whereas the P-63 just has a single pilot. However, he was unable to confirm any casualties.