If you're coming in through O'Hare in Chicago, look for this
It is the tram to get to other terminals in O'Hare, especially if you're coming in the international terminal, #5. Terminal #2 is near the bus and shuttle center. Click the image for more detailed information. I take the bus into and out of Chicago every month, so I've had a lot of practice. And don't forget to share it with your friends that are going too.