dfw terminal d customs choice
 

I am arriving in terminal d at gate 31. Two other flights arrive 15 minutes before mine in gates 34 and 40. Can I go to customs in the middle or other side? On a slow night, would all 3 stations be manned and open?

Note that from gate 31, the path from the gate went to the right and went a very long way, so by default I ended up either in the middle or other side customs, I can't be sure. 20 minutes to get through customs, to terminal C on the SkyLink, and through security. No lineups at either, but a LOT of walking.