Dozens of airports across the United States could see thousands of flight cancellations amid the longest government shutdown in U.S. history. ABC News has obtained an exclusive list of 40 potentially impacted airports, with significant representation from California and Nevada. Affected locations include San Francisco International Airport, Oakland, Los Angeles, San Diego, and Las Vegas International. Sacramento International Airport is not on the list. American Airlines released a statement responding to the potential cancellations, saying the company is awaiting additional FAA information to determine which flights will be impacted. The airline expects the vast majority of customers' travel will be unaffected but apologized for potential disruptions, acknowledging that customers are trav

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