WASHINGTON, DC - JULY 29: U.S. Transportation Secretary Sean Duffy (L) and United Airlines CEO Scott Kirby join President Donald Trump to announce new plans for Dulles International Airport in the Oval Office at the White House on July 29, 2026 in Washington, DC. The proposed $22.5 billion renovation will replace the unpopular "people movers" with an underground U-shaped train to move travelers between terminals and include a major terminal expansion and more convenient car parking. (Photo by Chip Somodevilla/Getty Images)