The FAA's air traffic reductions are taking effect. Here's what to know

An air traffic control tower rises above Ronald Reagan Washington National Airport, one of the 40 major airports nationwide targeted for Federal Aviation Administration flight reductions..

Airlines are canceling hundreds of flights to comply with the FAA's order. But there are still questions about the plan, which the agency says will keep the skies safe during the government shutdown.

(Image credit: Anna Moneymaker)