In Anjeong-ri, a short stroll from the Walk-In Gate at U.S. Army Garrison (USAG) Humphreys in Pyeongtaek, Gyeonggi Province, JJ s American Diner is doing some down-home cooking. This casual eatery has all the nostalgia of a retro diner in small-town USA, offering a wide range of Southern classics and homestyle American dishes.