WASHINGTON, DC - JULY 29: U.S. Secretary of Transportation Sean Duffy (R) speaks alongside (L-R) Deputy Secretary of Transportation Steven G. Bradbury, MWAA board member Trent Morse, MWAA CEO Jack Potter, U.S. President Donald Trump, and United Airlines CEO Scott Kirby during an announcement to renovate Washington Dulles International Airport, in the Oval Office of the White House on July 29, 2026 in Washington, DC. The Department of Transportation plans to unveil a $22 billion plan to rebuild the federally owned airport that will include an underground U-shaped train to move travelers between terminals along with a major terminal expansion and more convenient car parking. (Photo by Chip Somodevilla/Getty Images)

US Transportation Secretary Sean Duffy points a model of a revamped Washington Dulles International Airport as President Donald Trump looks on in the Oval Office of the White House in Washington, DC, on July 29, 2026. US President Donald Trump unveiled on Wednesday a $20 billion plan to rebuild and renovate Washington Dulles International Airport. (Photo by Ken Cedeno / AFP via Getty Images)

WASHINGTON, DC - JULY 29: U.S. President Donald Trump (seated) is joined by (L-R) Deputy Secretary of Transportation Steven G. Bradbury, MWAA board member Trent Morse, MWAA CEO Jack Potter, U.S. Secretary of Transportation Sean Duffy, and United Airlines CEO Scott Kirby during an announcement to renovate Washington Dulles International Airport, in the Oval Office of the White House on July 29, 2026 in Washington, DC. The Department of Transportation plans to unveil a $22 billion plan to rebuild the federally owned airport that will include an underground U-shaped train to move travelers between terminals along with a major terminal expansion and more convenient car parking. (Photo by Chip Somodevilla/Getty Images)

WASHINGTON, DC - JULY 29: United Airlines CEO Scott Kirby (R) speaks alongside (L-R) Deputy Secretary of Transportation Steven G. Bradbury, U.S. President Donald Trump, MWAA board member Trent Morse, MWAA CEO Jack Potter, and U.S. Secretary of Transportation Sean Duffy during an announcement to renovate Washington Dulles International Airport, in the Oval Office of the White House on July 29, 2026 in Washington, DC. The Department of Transportation plans to unveil a $22 billion plan to rebuild the federally owned airport that will include an underground U-shaped train to move travelers between terminals along with a major terminal expansion and more convenient car parking. (Photo by Chip Somodevilla/Getty Images)

WASHINGTON, DC - JULY 29: United Airlines CEO Scott Kirby (R) speaks alongside (L-R) Deputy Secretary of Transportation Steven G. Bradbury, U.S. President Donald Trump, MWAA board member Trent Morse, MWAA CEO Jack Potter, and U.S. Secretary of Transportation Sean Duffy during an announcement to renovate Washington Dulles International Airport, in the Oval Office of the White House on July 29, 2026 in Washington, DC. The Department of Transportation plans to unveil a $22 billion plan to rebuild the federally owned airport that will include an underground U-shaped train to move travelers between terminals along with a major terminal expansion and more convenient car parking. (Photo by Chip Somodevilla/Getty Images)

WASHINGTON, DC - JULY 29: United Airlines CEO Scott Kirby (R) speaks alongside (L-R) Deputy Secretary of Transportation Steven G. Bradbury, U.S. President Donald Trump, MWAA board member Trent Morse, MWAA CEO Jack Potter, and U.S. Secretary of Transportation Sean Duffy during an announcement to renovate Washington Dulles International Airport, in the Oval Office of the White House on July 29, 2026 in Washington, DC. The Department of Transportation plans to unveil a $22 billion plan to rebuild the federally owned airport that will include an underground U-shaped train to move travelers between terminals along with a major terminal expansion and more convenient car parking. (Photo by Chip Somodevilla/Getty Images)

WASHINGTON, DC - JULY 29: U.S. Secretary of Transportation Sean Duffy (R) speaks alongside (L-R) Deputy Secretary of Transportation Steven G. Bradbury, MWAA board member Trent Morse, MWAA CEO Jack Potter, U.S. President Donald Trump, and United Airlines CEO Scott Kirby during an announcement to renovate Washington Dulles International Airport, in the Oval Office of the White House on July 29, 2026 in Washington, DC. The Department of Transportation plans to unveil a $22 billion plan to rebuild the federally owned airport that will include an underground U-shaped train to move travelers between terminals along with a major terminal expansion and more convenient car parking. (Photo by Chip Somodevilla/Getty Images)

US President Donald Trump speaks in the Oval Office of the White House in Washington, DC, on July 29, 2026. US President Donald Trump unveiled a $20 billion plan to rebuild and renovate Washington Dulles International Airport. (Photo by Ken Cedeno / AFP via Getty Images)