In August 2005, the concourse connector was opened. This is a long hallway on the secure side of the airport that connects the A, B and C concourses to the D and E concourses on the other side of the airport. If there is a long line at the checkpoint at one end of the airport, passengers may use the other checkpoint and walk through the connector to their desired concourse. The connector closed permanently on January 5, 2021 to make room for terminal expansion.