If you travel by air around the US you will go through Dallas Fort Worth (DFW) airport as sometime in your travels. There are 5 terminals with a total of 155 gates. It could be a night mare getting from one gate to another for a connecting flight if not for Skylink the high speed train that encircles all five terminals and can deliver you to your gate in an average of 5 minutes. I recently had a three hour layover at DFW and to kill time just decided to ride Skylink around the entire complex. I had the D200 along with the 12-24 attached. Here are a few images from my tour around DFW.