Today is the first day of Real ID enforcement at airports across the U.S. Here's what travelers have to know before taking to the skies.

Today is the first day of Real ID enforcement at Pittsburgh International Airport and airports across the U.S., KDKA's Lauren Linder and Chilekasi Adele bring us the latest updates from Moon Township.

Travelers arriving at Pittsburgh International Airport Wednesday without a Real ID or another acceptable form of identification should prepare for possible additional screening. Starting Wednesday, federal Real ID requirement goes into effect and will be enforced by TSA agents at airports across the country.