Scott4AA- I know terminals A,C, and B are connected to each other because of AA, but is terminal E(Delta,AirTran,Delta Express Carriers, Air Canada, and Northwest) connected to any terminals? Regarding Terminals A and C being connected to B, it is only the AA part of Terminal B(which is right on the older part of terminal b) so if you are flying BA,LH, or KE, and you are connecting from AA, you have a VERY long walk. However in the sky bridges, there are plenty of moving walkways.
But there is the airport train which currently is pretty slow and then there is the TrAAin which is specifically for AA which only serves Terminals A and C and the AA part of B. The airport train serves all of the terminals.
Under construction and set to open when Terminal D(international terminal) opens, there is a new airport train which runs above the terminals and the stations are on top of the terminals. Not only is this much faster(and maybe easier), it carries more people, and best of all, you get views of the ramp!
Give me a break, I created this username when I was a kid...