The commemorative Veterans Day weekend event in Dallas was turned into a tragic sight on Saturday, according to the authorities, when two World War II-era warplanes collided in midair.

The number of passengers on board the Bell P-63 Kingcobra and Boeing B-17 Flying Fortress at the time of the 1:20 pm local time collision was not immediately known, according to the Federal Aviation Administration.

The National Transportation Safety Board and the FAA will both look into the collision, according to the FAA.

Also read: Watch: Dallas air show aircraft crash

About 10 miles south of Dallas’s downtown, at Dallas Executive Airport, where the Wings Over Dallas air show was taking place, a collision took place.

The collision of two World War II-era military aircraft on Saturday at a Dallas air show was the most recent in a string of accidents involving antique aircraft used or intended for military operations. Recent deadly collisions both domestically and overseas include the following:

October 2, 2019: A travelling antique aircraft exhibition ended in a crash at Bradley International Airport, north of Hartford, Connecticut, involving a four-engine, propeller-driven B-17G Flying Fortress bomber carrying 13 people. There were six injuries and seven fatalities. The National Transportation Safety Board determined that pilot mistake was the most likely culprit, with poor maintenance playing a role.

Also read: What is the Commemorative Air Force Wings Over Dallas airshow?

November 17, 2018: The pilot and a passenger were killed when a privately owned vintage World War II Mustang fighter airfield jet crashed into the parking lot of an apartment building in Fredericksburg, Texas. After flying overhead during a living history performance at the National Museum of the Pacific War, the P-51D Mustang was making its way back. Several cars in the parking lot also sustained damage in addition to the destruction of the airplane.

August 4, 2018: All 20 people on board were killed when a 79-year-old Junkers Ju-52 aircraft operated by the Swiss business Ju-Air crashed into the Piz Segnas mountain close to the Flims ski resort in eastern Switzerland. The German-built aircraft, which was retired from the Swiss air force in 1981, was transporting visitors who wished to enjoy “adventure flights” in historic aircraft to explore the country’s beauty. According to Swiss authorities, the pilots’ “high-risk flying” caused the tragedy.

Also read: Dallas Mayor Eric Johnson on airshow air crash: Terrible tragedy in our city

May 30, 2018: The pilot of a little antique plane that was one of six aircraft in a GEICO stunt squad that crashed in a residential wooded area of Melville, New York, was killed. The North American T-6 Texan, a vintage SNJ-2 airplane from World War II, had just taken off from a neighbouring airstrip on its way to Maryland when it crashed.

July 16, 2017: In Cummings, Kansas, a World War II-era P-51D Mustang “Baby Duck” crashed into a field, killing the pilot and the airport manager. According to the authorities, the pilot was repeating a trick he had done the day before at the Amelia Earhart Festival.

Jan. 26, 2017: A World War II-era Grumman G-73 Mallard flying boat stalled and nosedived into the Swan River in Perth, Australia, during Australia Day celebrations. Both the pilot and his passenger died.

Also read: Dallas air show crash: Where is Dallas Executive Airport?

August 27, 2016: A pilot from Alaska was killed when his 450 Stearman biplane, a World War II-era plane often used for military training, crashed during the Airshow of the Cascades in Madras, Oregon.

July 17, 2016: A T-28 Trojan, used by the U.S. military as a training aircraft beginning in the 1950s and also as a counterinsurgency aircraft during the Vietnam War, crashed at the Cold Lake Air Show in Alberta, killing the pilot. Thousands of spectators witnessed the accident.

August 22, 2015: A 1950s-era Hawker Hunter T7 jet crashed into a busy highway near West Sussex, England, killing 11 and injuring more than a dozen others. Investigators said the pilot, who survived, was flying too low and slow to successfully complete a loop-the-loop. He was charged with 11 counts of manslaughter but ultimately was cleared.

Also read: Two planes in mid-air collision at Dallas air show, Texas authorities respond

June 22, 2013: While performing at the Vectren Dayton Air Show in Vandalia, Ohio, a World War II-era Boeing-Stearman IB75A biplane crashed and caught fire, killing the pilot and a wing walker. The disaster was witnessed by thousands of people, and government safety officials determined that pilot error was most likely to blame.

September 16, 2011: The Galloping Ghost, a modified P-51D Mustang that was 70 years old, crashed into spectators at the National Championship Air Races and Air Show in Reno, Nevada, killing 10 people and wounding over 60 more. Also lost was the pilot. Federal investigators attributed the collision to speed and worn parts.