The Washington, D.C./Lexington, Ky., alt-country outfit These United States is wrapping up a national tour early next month, and has documented much of the trek for BlueComet.tv as the Web site’s artists in residence. The final installment of the video tour diary recently went online, and it brims with road-warrior signifiers, from open highways and dingy clubs to tremolous pianos and yearning slide guitars. Also, lots of aviator glasses. Check out the video above, and watch the rest of the series here.