On the concourse that leads to the D terminal, right net to where you head down the escalators to the E terminal.
I've been to quite a few Starbucks in my Yelp life (see the lists) and this one is unlike all of the ones that are "stand-alone" or even inside a supermarket. In the airport, this *$ is all about getting people their coffee and getting them onto a plane. They aren't encouraging people to hang around and use the wi-fi (which is the airport's not Starbucks).
It's a outsource operation of some sort here, rather than one run by the proper Starbucks people. They have most of the drinks that are present in other Starbucks, but they don't do the "short" size. I prefer it because it has just as much coffee, but a lot less milk. Fewer calories, less cost, better taste (if such a thing can be said of Starbucks).
They did manage to make my "tall" coffee and get me headed towards the plane quickly. It's a captive audience (since you can't bring liquids into the airport) so don't expect much.