In a typical March, about four million passengers might travel through McCarran International Airport, landing and taking off in balmy spring weather. They request skycaps to help with their bags. They purchase food in the terminals. They hail taxicabs. They rent sedans and SUVs.

Workers form the backbone of the bustling operation, serving on tarmac crews, preparing food and assisting passengers with everything from getting their rental cars to checking their bags.

But as visitation at the airport decreased to less than half of what it was in March 2019, dozens of workers, from skycaps to cabin service cleaners, were laid off, according to letters sent to state and local officials under the Worker Adjustment and Retraining Notification Act of 1988.