Air traffic controllers warn of 'tipping point' as U.S. government shutdown drags on

As the U.S. government shutdown enters a record 36th day, air traffic controllers, who are required to work without pay, are feeling the squeeze.

The government shutdown is taking a growing toll on air traffic controllers who are working without pay. Staffing shortages led to big delays over the weekend, raising concerns about travel chaos.

(Image credit: Brendan Smialowski)