The US aviation system is entering a period of transformation unlike anything seen in decades, as airports across the country embark on massive expansion and modernization programs designed to meet surging demand while redefining the passenger experience. From John F. Kennedy International Airport (JFK) to Los Angeles International Airport (LAX), aging terminals built in the mid-20th century are being replaced or reimagined, with billions of dollars flowing into projects that emphasize space, efficiency, sustainability, and global competitiveness.