Terminal 4 is home to AA, WN, and non-US based airlines. There are seven concourses that are all connected airside.

Here is a list of all airline locations.

You must leave security to move between T4,T3, and T2.. Airport train from T4 to T3 then walk to T2.

Car rentals are in a central building about a 12 minute ride from the terminals using common airport buses.

There seems to always be road construction.