Britain's Prime Minister Boris Johnson sits in the cockpit of a Lockheed Martin F-35 Lightning II during a visit to HMS Queen Elizabeth aircraft carrier in Portsmouth, Britain, May 21, 2021. Leon Neal/Pool via REUTERS

Britain's Prime Minister Boris Johnson sits in the cockpit of a Lockheed Martin F-35 Lightning II during a visit to HMS Queen Elizabeth aircraft carrier in Portsmouth, Britain, May 21, 2021. Leon Neal/Pool via REUTERS

Britain's Prime Minister Boris Johnson sits in the cockpit of a Lockheed Martin F-35 Lightning II during a visit to HMS Queen Elizabeth aircraft carrier in Portsmouth, Britain, May 21, 2021. Leon Neal/Pool via REUTERS

Britain's Prime Minister Boris Johnson sits in the cockpit of a Lockheed Martin F-35 Lightning II during a visit to HMS Queen Elizabeth aircraft carrier in Portsmouth, Britain, May 21, 2021. Leon Neal/Pool via REUTERS

Britain's Prime Minister Boris Johnson sits in the cockpit of a Lockheed Martin F-35 Lightning II during a visit to HMS Queen Elizabeth aircraft carrier in Portsmouth, Britain, May 21, 2021. Leon Neal/Pool via REUTERS

Britain's Prime Minister Boris Johnson sits in the cockpit of a Lockheed Martin F-35 Lightning II during a visit to HMS Queen Elizabeth aircraft carrier in Portsmouth, Britain, May 21, 2021. Leon Neal/Pool via REUTERS

Model planes of Lockheed Martin are seen in the International Defence Exhibition, Abu Dhabi, United Arab Emirates February 22, 2021. REUTERS/Khushnum Bhandari

A Lockheed C-130 Hercules lands near Mirage 2000 fighter jets during a presentation of the French Air and Space Army at the BA 105 Evreux-Fauville Air Force Base, France, October 15, 2020. REUTERS/Gonzalo Fuentes

Staff members pose in front of Lockheed Electra Airliner in the Science Museum during a Guest Preview Day ahead of the official opening on Wednesday, amid the spread of the coronavirus disease (COVID-19), in London, Britain August 17, 2020. REUTERS/John Sibley

An Airbus A400M Atlas, a C-160 Transall, and Lockheed KC-130 Hercules of 61e escadre de transport fly over the Arc de Triomphe during annual Bastille Day military ceremony on the Place de la Concorde in Paris, on July 14, 2020. Ludovic Marin/Pool via REUTERS

An Airbus A400M Atlas, a C-160 Transall and Lockheed KC-130 Hercules of 61e escadre de transport fly over the Luxor Obelisks during annual Bastille Day military ceremony on the Place de la Concorde in Paris, on July 14, 2020. Ludovic Marin/Pool via REUTERS

Marillyn Hewson, Executive Chairman of Lockheed Martin, participates in a meeting of the American Workforce Policy Advisory Board in the East Room at the White House in Washington, U.S., June 26, 2020. REUTERS/Tom Brenner

A Lockheed C5-M 'Super' Galaxy transport plane of the U.S. Air Force is seen at the airport in Zurich, Switzerland January 20, 2020. REUTERS/Arnd Wiegmann

A Lockheed C5-M 'Super' Galaxy transport plane of the U.S. Air Force is seen at the airport in Zurich, Switzerland January 20, 2020. REUTERS/Arnd Wiegmann

A Lockheed C5-M 'Super' Galaxy transport plane of the U.S. Air Force is seen at the airport in Zurich, Switzerland January 20, 2020. REUTERS/Arnd Wiegmann

A Lockheed C5-M 'Super' Galaxy transport plane of the U.S. Air Force is seen at the airport in Zurich, Switzerland January 20, 2020. REUTERS/Arnd Wiegmann

A 1958 Lockheed Constellation airplane sits outside the TWA Hotel, which is housed inside the former 1962 TWA Flight Center terminal which was designed by architect Eero Saarinen at JFK International Airport in New York, U.S., October 2, 2019. REUTERS/Mike Segar

U.S. President Donald Trump waits to listen to Marillyn Hewson, CEO of Lockheed Martin as they participate in the "Pledge to America's Workers - One year Celebration" event in the State Dining Room of the White House in Washington, U.S., July 25, 2019. REUTERS/Leah Millis

U.S. President Donald Trump shakes hands with Marillyn Hewson, CEO of Lockheed Martin as they participate in the "Pledge to America's Workers - One year Celebration" event in the State Dining Room of the White House in Washington, U.S., July 25, 2019. REUTERS/Leah Millis

U.S. President Donald Trump speaks next to Lockheed Martin CEO Marillyn Hewson at the third annual "Made in America Product Showcase" on the South Lawn of the White House in Washington, U.S., July 15, 2019. REUTERS/Kevin Lamarque

A Lockheed Martin Terminal High Altitude Area Defense (THAAD) missile interceptor is seen during the third annual "Made in America Product Showcase" on the South Lawn of the White House in Washington, U.S., July 15, 2019. REUTERS/Kevin Lamarque

U.S. President Donald Trump sits inside a Lockheed Martin Terminal High Altitude Area Defense (THAAD) missile interceptor next to Lockheed Martin CEO Marillyn Hewson while examining products at the third annual "Made in America Product Showcase" on the South Lawn of the White House in Washington, U.S., July 15, 2019. REUTERS/Kevin Lamarque

U.S. President Donald Trump delivers remarks on supporting the passage of the U.S.-Mexico-Canada (USMCA) trade deal during a visit to Derco Aerospace Inc., a Lockheed Martin subsidiary, in Milwaukee, Wisconsin, U.S., July 12, 2019. REUTERS/Carlos Barria?

U.S. President Donald Trump arrives to deliver a speech supporting the passage of the U.S.-Mexico-Canada (USMCA) trade deal during a visit to Derco Aerospace Inc., a Lockheed Martin subsidiary, in Milwaukee, Wisconsin, U.S., July 12, 2019. REUTERS/Carlos Barria?

U.S. President Donald Trump arrives to delivers a speech supporting the passage of the U.S.-Mexico-Canada (USMCA) trade deal during a visit to Derco Aerospace Inc., a Lockheed Martin subsidiary, in Milwaukee, Wisconsin, U.S., July 12, 2019. REUTERS/Carlos Barria?

Lockheed Martin CEO Marillyn Hewson speaks prior to the arrival of U.S. President Donald Trump during a visit to Derco Aerospace Inc., a Lockheed Martin subsidiary, in Milwaukee, Wisconsin, U.S., July 12, 2019. REUTERS/Carlos Barria?

U.S. President Donald Trump delivers remarks on supporting the passage of the U.S.-Mexico-Canada (USMCA) trade deal during a visit to Derco Aerospace Inc., a Lockheed Martin subsidiary, in Milwaukee, Wisconsin, U.S., July 12, 2019. REUTERS/Carlos Barria

U.S. President Donald Trump delivers remarks on supporting the passage of the U.S.-Mexico-Canada (USMCA) trade deal during a visit to Derco Aerospace Inc., a Lockheed Martin subsidiary, in Milwaukee, Wisconsin, U.S., July 12, 2019. REUTERS/Carlos Barria

With a U.S. flag as a backdrop, U.S. President Donald Trump delivers remarks on supporting the passage of the U.S.-Mexico-Canada (USMCA) trade deal during a visit to Derco Aerospace Inc., a Lockheed Martin subsidiary, in Milwaukee, Wisconsin, U.S., July 12, 2019. REUTERS/Carlos Barria

U.S. President Donald Trump pumps his fist as he delivers remarks on supporting the passage of the U.S.-Mexico-Canada (USMCA) trade deal during a visit to Derco Aerospace Inc., a Lockheed Martin subsidiary, in Milwaukee, Wisconsin, U.S., July 12, 2019. REUTERS/Carlos Barria

U.S. President Donald Trump delivers remarks on supporting the passage of the U.S.-Mexico-Canada (USMCA) trade deal during a visit to Derco Aerospace Inc., a Lockheed Martin subsidiary, in Milwaukee, Wisconsin, U.S., July 12, 2019. REUTERS/Carlos Barria

U.S. President Donald Trump delivers remarks on supporting the passage of the U.S.-Mexico-Canada (USMCA) trade deal during a visit to Derco Aerospace Inc., a Lockheed Martin subsidiary, in Milwaukee, Wisconsin, U.S., July 12, 2019. REUTERS/Carlos Barria

U.S. President Donald Trump delivers remarks on supporting the passage of the U.S.-Mexico-Canada (USMCA) trade deal during a visit to Derco Aerospace Inc., a Lockheed Martin subsidiary, in Milwaukee, Wisconsin, U.S., July 12, 2019. REUTERS/Carlos Barria

U.S. President Donald Trump delivers remarks on supporting the passage of the U.S.-Mexico-Canada (USMCA) trade deal during a visit to Derco Aerospace Inc., a Lockheed Martin subsidiary, in Milwaukee, Wisconsin, U.S., July 12, 2019. REUTERS/Carlos Moraga Barria

U.S. President Donald Trump delivers remarks on supporting the passage of the U.S.-Mexico-Canada (USMCA) trade deal during a visit to Derco Aerospace Inc., a Lockheed Martin subsidiary, in Milwaukee, Wisconsin, U.S., July 12, 2019. REUTERS/Carlos Barria

U.S. President Donald Trump delivers remarks on supporting the passage of the U.S.-Mexico-Canada (USMCA) trade deal during a visit to Derco Aerospace Inc., a Lockheed Martin subsidiary, in Milwaukee, Wisconsin, U.S., July 12, 2019. REUTERS/Carlos Barria

U.S. President Donald Trump delivers remarks on supporting the passage of the U.S.-Mexico-Canada (USMCA) trade deal during a visit to Derco Aerospace Inc., a Lockheed Martin subsidiary, in Milwaukee, Wisconsin, U.S., July 12, 2019. REUTERS/Carlos Barria?

U.S. President Donald Trump delivers remarks on supporting the passage of the U.S.-Mexico-Canada (USMCA) trade deal during a visit to Derco Aerospace Inc., a Lockheed Martin subsidiary, in Milwaukee, Wisconsin, U.S., July 12, 2019. REUTERS/Carlos Barria?

U.S. President Donald Trump delivers remarks on supporting the passage of the U.S.-Mexico-Canada (USMCA) trade deal during a visit to Derco Aerospace Inc., a Lockheed Martin subsidiary, in Milwaukee, Wisconsin, U.S., July 12, 2019. REUTERS/Carlos Barria?

U.S. President Donald Trump delivers remarks on supporting the passage of the U.S.-Mexico-Canada (USMCA) trade deal during a visit to Derco Aerospace Inc., a Lockheed Martin subsidiary, in Milwaukee, Wisconsin, U.S., July 12, 2019. REUTERS/Carlos Barria?

Lockheed Martin CEO Marillyn Hewson speaks prior to the arrival of U.S. President Donald Trump during a visit to Derco Aerospace Inc., a Lockheed Martin subsidiary, in Milwaukee, Wisconsin, U.S., July 12, 2019. REUTERS/Carlos Barria?

Lockheed Martin CEO Marillyn Hewson speaks prior to the arrival of U.S. President Donald Trump prior to a speech touting the president's support of the U.S.-Mexico-Canada (USMCA) trade deal during a visit to Derco Aerospace Inc., a Lockheed Martin subsidiary, in Milwaukee, Wisconsin, U.S., July 12, 2019. REUTERS/Carlos Barria?

Workers and guests await the arrival of U.S. President Donald Trump prior to a speech touting the president's support of the passage of the U.S.-Mexico-Canada (USMCA) trade deal during a visit to Derco Aerospace Inc., a Lockheed Martin subsidiary, in Milwaukee, Wisconsin, U.S., July 12, 2019. REUTERS/Carlos Barria?

A Lockheed Martin F-16 fighter of the Belgian Air Force performs at the 53rd International Paris Air Show at Le Bourget Airport near Paris, France June 22, 2019. REUTERS/Pascal Rossignol

A Lockheed Martin F-16 fighter of the Belgian Air Force performs at the 53rd International Paris Air Show at Le Bourget Airport near Paris, France June 22, 2019. REUTERS/Pascal Rossignol

Military personnel are seen aboard the USS Wasp next to a Lockheed Martin F-35B jet before U.S. President Donald Trump and first lady Melania Trump participate in a Memorial Day Address in Yokosuka, south of Tokyo, Japan May 28, 2019. REUTERS/Issei Kato

Military personnel are seen aboard the USS Wasp next to a Lockheed Martin F-35B jet before U.S. President Donald Trump and first lady Melania Trump participate in a Memorial Day Address in Yokosuka, south of Tokyo, Japan May 28, 2019. REUTERS/Issei Kato

Marillyn Hewson, Chairman, President and CEO, Lockheed Martin Corporation, speaks at the 2019 Milken Institute Global Conference in Beverly Hills, California, U.S., April 29, 2019. REUTERS/Lucy Nicholson

Marillyn Hewson, Chairman, President and CEO, Lockheed Martin Corporation, speaks at the 2019 Milken Institute Global Conference in Beverly Hills, California, U.S., April 29, 2019. REUTERS/Lucy Nicholson

Marillyn Hewson, Chairman, President and CEO, Lockheed Martin Corporation speaks during the Milken Institute's 22nd annual Global Conference in Beverly Hills, California, U.S., April 29, 2019. REUTERS/Mike Blake

Marillyn Hewson Chairman, President and CEO, Lockheed Martin Corporation speaks during the Milken Institute's 22nd annual Global Conference in Beverly Hills, California, U.S., April 29, 2019. REUTERS/Mike Blake

The F-35 Lightning II that crashed on Tuesday was one of a growing global fleet of advanced ‘stealth’ aircraft sold to U.S. allies, and the first to be assembled in Japan.

Keith Maxwell, Senior Product Manager of Exoskeleton Technologies at Lockheed Martin, right, speaks alongside Paul Scharre, Senior Fellow and Director of the Technology and National Security Program at the Center for a New American Security, during a Exoskeleton demonstration and discussion, in Washington, U.S., November 29, 2018. REUTERS/Al Drago

Keith Maxwell, Senior Product Manager of Exoskeleton Technologies at Lockheed Martin, wears an Exoskeleton during a Exoskeleton demonstration and discussion, in Washington, U.S., November 29, 2018. REUTERS/Al Drago

Keith Maxwell, Senior Product Manager of Exoskeleton Technologies at Lockheed Martin, wears an Exoskeleton during a Exoskeleton demonstration and discussion, in Washington, U.S., November 29, 2018. REUTERS/Al Drago

Keith Maxwell, Senior Product Manager of Exoskeleton Technologies at Lockheed Martin, demonstrates an Exoskeleton during a Exoskeleton demonstration and discussion, in Washington, U.S., November 29, 2018. REUTERS/Al Drago

Keith Maxwell, Senior Product Manager of Exoskeleton Technologies at Lockheed Martin, demonstrates an Exoskeleton during a Exoskeleton demonstration and discussion, in Washington, U.S., November 29, 2018. REUTERS/Al Drago

Keith Maxwell, Senior Product Manager of Exoskeleton Technologies at Lockheed Martin, demonstrates an Exoskeleton during a Exoskeleton demonstration and discussion, in Washington, U.S., November 29, 2018. REUTERS/Al Drago

Keith Maxwell, Senior Product Manager of Exoskeleton Technologies at Lockheed Martin, demonstrates an Exoskeleton during a Exoskeleton demonstration and discussion, in Washington, U.S., November 29, 2018. REUTERS/Al Drago