Russian MiG-31 supersonic interceptor aircraft fly in formation during a rehearsal for the Victory Day parade as a monument of Prince Vladimir is seen in the foreground, in Moscow, Russia June 20, 2020. The military parade marking the 75th anniversary of the victory over Nazi Germany in World War Two was planned for May 9 and postponed due to the outbreak of the coronavirus disease (COVID-19). REUTERS/Maxim Shemetov

Gaia's Harmony Honey Farm Owner, Gaosheng Cha, wears a Seattle Supersonics face mask at the Ballard Farmers' Market which reopened Sunday with new safety measures as efforts continue to help slow the spread of the coronavirus disease (COVID-19) in Seattle, Washington, U.S. April 19, 2020. REUTERS/Jason Redmond

A military vehicle carrying a WZ-8 supersonic reconnaissance drone travels past Tiananmen Square during military parade marking the 70th founding anniversary of People's Republic of China, on its National Day in Beijing, China October 1, 2019. REUTERS/Jason Lee

A military vehicle carrying a WZ-8 supersonic reconnaissance drone travels past Tiananmen Square during the military parade marking the 70th founding anniversary of People's Republic of China, on its National Day in Beijing, China October 1, 2019. REUTERS/Thomas Peter

MiG-31B supersonic interceptor aircrafts MiG-31B perform during a rehearsal for the airshow in Krasnoyarsk, Russia August 1, 2019. REUTERS/Ilya Naymushin

Russian Tu-160 Supersonic Bomber flies during a military parade marking the Belarus Independence Day in Minsk, Belarus July 3, 2019. REUTERS/Vasily Fedosenko

Russian Tu-160 Supersonic Bomber flies during a military parade marking the Belarus Independence Day in Minsk, Belarus July 3, 2019. REUTERS/Vasily Fedosenko

China has developed supersonic anti-ship cruise missiles while the U.S. rely on cold-war era subsonic Harpoon missiles.

People are pictured in Supersonics apparel during a protest before former Starbucks CEO Howard Schultz speaks during his book tour in Seattle, Washington, U.S., January 31, 2019. REUTERS/Jason Redmond

The Bloodhound SuperSonic Car, which is attempting to break the 1,000mph barrier in 2019, does its first public test run at Newquay airport, Newquay, Britain, October 26, 2017, REUTERS/Toby Melville

The Bloodhound SuperSonic Car, which is attempting to break the 1,000mph barrier in 2019, does its first public test run at Newquay airport, Newquay, Britain, October 26, 2017, REUTERS/Toby Melville

The Bloodhound SuperSonic Car, which is attempting to break the 1,000mph barrier in 2019, does its first public test run at Newquay airport, Newquay, Britain, October 26, 2017, REUTERS/Toby Melville

The Bloodhound SuperSonic Car, which is attempting to break the 1,000mph barrier in 2019, does its first public test run at Newquay airport, Newquay, Britain, October 26, 2017, REUTERS/Toby Melville

The Bloodhound SuperSonic Car, which is attempting to break the 1,000mph barrier in 2019, does its first public test run at Newquay airport, Newquay, Britain, October 26, 2017, REUTERS/Toby Melville

The Bloodhound SuperSonic Car, which is attempting to break the 1,000mph barrier in 2019, does its first public test run at Newquay airport, Newquay, Britain, October 26, 2017, REUTERS/Toby Melville

The Bloodhound SuperSonic Car, which is attempting to break the 1,000mph barrier in 2019, does its first public test run at Newquay airport, Newquay, Britain, October 26, 2017, REUTERS/Toby Melville

The Bloodhound SuperSonic Car, which is attempting to break the 1,000mph barrier in 2019, does its first public test run at Newquay airport, Newquay, Britain, October 26, 2017, REUTERS/Toby Melville

The Bloodhound SuperSonic Car, which is attempting to break the 1,000mph barrier in 2019, is prepared for its first public test runs at Newquay airport, Newquay, Britain, October 26, 2017, REUTERS/Toby Melville

Pilot Andy Green prepares to drive the Bloodhound SuperSonic Car, which is attempting to break the 1,000mph barrier in 2019, during its first public test runs at Newquay airport, Newquay, Britain, October 26, 2017, REUTERS/Toby Melville

Pilot Andy Green prepares to drive the Bloodhound SuperSonic Car, which is attempting to break the 1,000mph barrier in 2019, during its first public test runs at Newquay airport, Newquay, Britain, October 26, 2017, REUTERS/Toby Melville

Pilot Andy Green prepares to drive the Bloodhound SuperSonic Car, which is attempting to break the 1,000mph barrier in 2019, during its first public test runs at Newquay airport, Newquay, Britain, October 26, 2017, REUTERS/Toby Melville

Pilot Andy Green prepares to drive the Bloodhound SuperSonic Car, which is attempting to break the 1,000mph barrier in 2019, during its first public test runs at Newquay airport, Newquay, Britain, October 26, 2017, REUTERS/Toby Melville

Pilot Andy Green steers the Bloodhound SuperSonic Car, which is attempting to break the 1,000mph barrier in 2019, out of its hanger as it holds its first public test runs at Newquay airport, Newquay, Britain, October 26, 2017, REUTERS/Toby Melville

The Bloodhound SuperSonic Car, which is attempting to break the 1,000mph barrier in 2019, holds its first public test runs at Newquay airport, Newquay, Britain, October 26, 2017, REUTERS/Toby Melville

Spectators arrive to watch the Bloodhound SuperSonic Car which is attempting to break the 1,000mph barrier in 2019, and holds its first public test runs at Newquay airport, Newquay, Britain, October 26, 2017. REUTERS/Toby Melville

The Bloodhound SuperSonic Car, which is attempting to break the 1,000mph barrier in 2019, holds its first public test runs at Newquay airport, Newquay, Britain, October 26, 2017. REUTERS/Toby Melville

A prototype of the Bloodhound SuperSonic Car is given a polish before the latest model, which is attempting to break the 1,000mph barrier in 2019, holds its first public test runs at Newquay airport, Newquay, Britain, October 26, 2017, REUTERS/Toby Melville

A prototype of the Bloodhound SuperSonic Car is given a polish before the latest model, which is attempting to break the 1,000mph barrier in 2019, holds its first public test runs at Newquay airport, Newquay, Britain, October 26, 2017, REUTERS/Toby Melville

A prototype of the Bloodhound SuperSonic Car is given a polish before the latest model, which is attempting to break the 1,000mph barrier in 2019, holds its first public test runs at Newquay airport, Newquay, Britain, October 26, 2017, REUTERS/Toby Melville

A prototype of the Bloodhound SuperSonic Car is given a polish before the latest model, which is attempting to break the 1,000mph barrier in 2019, holds its first public test runs at Newquay airport, Newquay, Britain, October 26, 2017, REUTERS/Toby Melville

A logo of supersonic jet maker Aerion Corporation is pictured on their booth during the European Business Aviation Convention & Exhibition (EBACE) in Geneva, Switzerland, May 22, 2017. REUTERS/Denis Balibouse

A visitor looks at the AS2 supersonic business jet replica on the Aerion Corporation booth during the European Business Aviation Convention & Exhibition (EBACE) in Geneva, Switzerland, May 22, 2017. REUTERS/Denis Balibouse

India's Brahmos supersonic cruise missiles, mounted on a truck, pass by during a full dress rehearsal for the Republic Day parade in New Delhi, India, January 23, 2006. REUTERS/Kamal Kishore/File Photo TPX IMAGES OF THE DAY

India's Brahmos supersonic cruise missiles, mounted on a truck, pass by during a full dress rehearsal for the Republic Day parade in New Delhi, India, January 23, 2006. REUTERS/Kamal Kishore/File Photo

India's Brahmos supersonic cruise missile is shown during the Republic Day parade in New Delhi, India, January 26, 2008.REUTERS/B Mathur/File Photo

A Marine Corps F/A-18 Hornet from Naval Air Station Oceana Virginia, makes a high speed pass during the Canadian International Air Show in Toronto, Ontario, September 6, 2015. REUTERS/Louis Nastro

A Boeing 367-80 (prototype to the Boeing 707) (front), a Boeing 307 Stratoliner (rear, R), the first pressurized cabin passenger aircraft, and an Air France Concorde supersonic airliner (rear, C) are seen at the Udvar-Hazy Smithsonian National Air and Space Annex Museum in Chantilly, Virginia August 28, 2015. REUTERS/Gary Cameron

A Boeing 307 Stratoliner, the first pressurized cabin passenger aircraft, and an Air France Concorde supersonic airliner, are seen at the Udvar-Hazy Smithsonian National Air and Space Annex Museum in Chantilly, Virginia August 28, 2015. REUTERS/Gary Cameron

A visitor takes a picture of a Tupolev Tu-144 commercial supersonic transport aircraft on display at the MAKS International Aviation and Space Salon in Zhukovsky, outside Moscow, Russia, August 25, 2015. REUTERS/Maxim Shemetov

Supersonic interceptor aircrafts MiG-31B perform during a show in Krasnoyarsk, Siberia, October 25, 2014. The show is conducted as part of a recruitment drive for Russia's military divisions, targeting the youth towards contractual military service, according to organizers. REUTERS/Ilya Naymushin (RUSSIA - Tags: MILITARY SOCIETY TRANSPORT)

A high altitude balloon is released as it lifts a saucer-shaped test vehicle, which holds equipment for landing large payloads on Mars, at the U.S. Navy's Pacific Missile Range Facility in Kauai, Hawaii June 28, 2014. The Low-Density Supersonic Decelerator (LDSD) will be lifted to high altitudes, where a rocket will take it even higher to the top of the stratosphere at several times the speed of sound. REUTERS/Marco Garcia (UNITED STATES - Tags: SCIENCE TECHNOLOGY)

A saucer-shaped test vehicle, which holds equipment for landing large payloads on Mars, is lifted up by a high altitude balloon at the U.S. Navy's Pacific Missile Range Facility in Kauai, Hawaii June 28, 2014. The Low-Density Supersonic Decelerator (LDSD) will be lifted to high altitudes, where a rocket will take it even higher to the top of the stratosphere at several times the speed of sound. REUTERS/Marco Garcia (UNITED STATES - Tags: SCIENCE TECHNOLOGY TPX IMAGES OF THE DAY)

A high altitude balloon lifts a saucer-shaped test vehicle, which holds equipment for landing large payloads on Mars, at the U.S. Navy's Pacific Missile Range Facility in Kauai, Hawaii June 28, 2014. The Low-Density Supersonic Decelerator (LDSD) will be lifted to high altitudes, where a rocket will take it even higher to the top of the stratosphere at several times the speed of sound. REUTERS/Marco Garcia (UNITED STATES - Tags: SCIENCE TECHNOLOGY)

A high altitude balloon lifts a saucer-shaped test vehicle, which holds equipment for landing large payloads on Mars, at the U.S. Navy's Pacific Missile Range Facility in Kauai, Hawaii June 28, 2014. The Low-Density Supersonic Decelerator (LDSD) will be lifted to high altitudes, where a rocket will take it even higher to the top of the stratosphere at several times the speed of sound. REUTERS/Marco Garcia (UNITED STATES - Tags: SCIENCE TECHNOLOGY)

A high altitude balloon is released to launch a saucer-shaped test vehicle, which holds equipment for landing large payloads on Mars, at the U.S. Navy's Pacific Missile Range Facility in Kauai, Hawaii June 28, 2014. The Low-Density Supersonic Decelerator (LDSD) will be lifted to high altitudes, where a rocket will take it even higher to the top of the stratosphere at several times the speed of sound. REUTERS/Marco Garcia (UNITED STATES - Tags: SCIENCE TECHNOLOGY)

Onlookers await the launch of a saucer-shaped test vehicle, which holds equipment for landing large payloads on Mars, at the US Navy's Pacific Missile Range Facility in Kauai, Hawaii June 28, 2014. The Low-Density Supersonic Decelerator (LDSD) will be lifted to high altitudes, where a rocket will take it even higher to the top of the stratosphere at several times the speed of sound. REUTERS/Marco Garcia (UNITED STATES - Tags: SCIENCE TECHNOLOGY)

The launch tower prepares to launch a saucer-shaped test vehicle, which holds equipment for landing large payloads on Mars, at the U.S. Navy's Pacific Missile Range Facility in Kauai, Hawaii June 28, 2014. The Low-Density Supersonic Decelerator (LDSD) will be lifted to high altitudes, where a rocket will take it even higher to the top of the stratosphere at several times the speed of sound. REUTERS/Marco Garcia (UNITED STATES - Tags: SCIENCE TECHNOLOGY)

Seattle mayor Mike McGinn (2nd L) talks with former NBA player Donald Earl "Slick" Watts (R) of the Supersonics and Arcsoft owner Mark Gantar at a re-election concert and rally in the Capitol Hill neighborhood of Seattle, Washington November 1, 2013. REUTERS/Jason Redmond (UNITED STATES - Tags: POLITICS SPORT BASKETBALL ELECTIONS BUSINESS)

Seattle mayor Mike McGinn (L) talks with former NBA player Donald Earl "Slick" Watts of the Supersonics at a re-election concert and rally in the Capitol Hill neighborhood of Seattle, Washington November 1, 2013. REUTERS/Jason Redmond (UNITED STATES - Tags: POLITICS SPORT BASKETBALL ELECTIONS)

Seattle mayor Mike McGinn (L) talks with former NBA player Donald Earl "Slick" Watts of the Supersonics at a re-election concert and rally in the Capitol Hill neighborhood of Seattle, Washington November 1, 2013. REUTERS/Jason Redmond (UNITED STATES - Tags: POLITICS SPORT BASKETBALL ELECTIONS)

A visitor walks past a Tupolev Tu-144 commercial supersonic transport aircraft at the MAKS International Aviation and Space Salon in Zhukovsky outside Moscow August 28, 2013. REUTERS/Maxim Shemetov (RUSSIA - Tags: TRANSPORT BUSINESS)

Soldiers march near a line of the Mikoyan MiG-31B supersonic interceptor aircrafts at the Kansk-Dalniy military airdrome outside the town of Kansk, some 210 km (130 miles) east of Russia's Siberian city of Krasnoyarsk, February 22, 2013. The airdrome is used by the 3rd Guard Aviation Group under Chelyabinsk aviation base of the Russian Air Force. Russia will mark the Defender of the Fatherland Day on February 23. REUTERS/Ilya Naymushin (RUSSIA - Tags: MILITARY TRANSPORT ANNIVERSARY)

Soldiers run near a line of the Mikoyan MiG-31B supersonic interceptor aircrafts at the Kansk-Dalniy military airdrome outside the town of Kansk, some 210 km (130 miles) east of Russia's Siberian city of Krasnoyarsk, February 22, 2013. The airdrome is used by the 3rd Guard Aviation Group under Chelyabinsk aviation base of the Russian Air Force. Russia will mark the Defender of the Fatherland Day on February 23. REUTERS/Ilya Naymushin (RUSSIA - Tags: MILITARY TRANSPORT ANNIVERSARY)

Olivier Metzner (C), French lawyer for U.S. Continental Airlines, speaks to journalists after the verdict in the Concorde appeal trial at the courthouse of Versailles near Paris November 29, 2012. A French appeals court on Thursday absolved Continental Airlines of responsibility for a 2000 Concorde crash which killed 113 people and cleared a mechanic at the U.S. airline of the charge of involuntary manslaughter. The verdict comes over a decade after the deadly accident that helped to spell the end of the supersonic airliner. A previous court found that a small metal strip, which fell onto the runway from a Continental aircraft just before the Concorde took off from Paris, caused the crash. REUTERS/Charles Platiau (FRANCE - Tags: DISASTER CRIME LAW TRANSPORT MEDIA)

Olivier Metzner (R), French lawyer for U.S. Continental Airlines, is seen at the end of the Concorde appeal trial at the courthouse of Versailles near Paris November 29, 2012. A French appeals court on Thursday absolved Continental Airlines of responsibility for a 2000 Concorde crash which killed 113 people and cleared a mechanic at the U.S. airline of the charge of involuntary manslaughter. The verdict comes over a decade after the deadly accident that helped to spell the end of the supersonic airliner. A previous court found that a small metal strip, which fell onto the runway from a Continental aircraft just before the Concorde took off from Paris, caused the crash. REUTERS/Charles Platiau (FRANCE - Tags: DISASTER CRIME LAW TRANSPORT)

Olivier Metzner (L), French lawyer for U.S. Continental Airlines, is surrounded by journalists as he arrives for the Concorde appeal trial at the courthouse of Versailles near Paris November 29, 2012. A French appeals court on Thursday absolved Continental Airlines of responsibility for a 2000 Concorde crash which killed 113 people and cleared a mechanic at the U.S. airline of the charge of involuntary manslaughter. The verdict comes over a decade after the deadly accident that helped to spell the end of the supersonic airliner. A previous court found that a small metal strip, which fell onto the runway from a Continental aircraft just before the Concorde took off from Paris, caused the crash. REUTERS/Charles Platiau (FRANCE - Tags: DISASTER CRIME LAW TRANSPORT)

Kenneth Burtt (L), Continental Airlines Vice President, Technical Services, stands next to his lawyer Olivier Metzner (R) at the end of the Concorde appeal trial at the courthouse of Versailles near Paris November 29, 2012. A French appeals court on Thursday absolved Continental Airlines of responsibility for a 2000 Concorde crash which killed 113 people and cleared a mechanic at the U.S. airline of the charge of involuntary manslaughter. The verdict comes over a decade after the deadly accident that helped to spell the end of the supersonic airliner. A previous court found that a small metal strip, which fell onto the runway from a Continental aircraft just before the Concorde took off from Paris, caused the crash. REUTERS/Charles Platiau (FRANCE - Tags: DISASTER CRIME LAW TRANSPORT)

View of the Concorde appeal trial at the courthouse of Versailles near Paris November 29, 2012. A French appeals court on Thursday absolved Continental Airlines of responsibility for a 2000 Concorde crash which killed 113 people and cleared a mechanic at the U.S. airline of the charge of involuntary manslaughter. The verdict comes over a decade after the deadly accident that helped to spell the end of the supersonic airliner. A previous court found that a small metal strip, which fell onto the runway from a Continental aircraft just before the Concorde took off from Paris, caused the crash. REUTERS/Charles Platiau (FRANCE - Tags: DISASTER CRIME LAW TRANSPORT)

Olivier Metzner (R), French lawyer for U.S. Continental Airlines, leaves after the verdict in the Concorde appeal trial at the courthouse of Versailles near Paris November 29, 2012. A French appeals court on Thursday absolved Continental Airlines of responsibility for a 2000 Concorde crash which killed 113 people and cleared a mechanic at the U.S. airline of the charge of involuntary manslaughter. The verdict comes over a decade after the deadly accident that helped to spell the end of the supersonic airliner. A previous court found that a small metal strip, which fell onto the runway from a Continental aircraft just before the Concorde took off from Paris, caused the crash. REUTERS/Charles Platiau (FRANCE - Tags: DISASTER CRIME LAW TRANSPORT)