By Jon Letman for The Diplomat - At first glance, Humphreys looks like an ordinary American suburb. With K-12 schools, chapels, a library, a big box store, dental and veterinary clinics and a spacious plaza where kids can skateboard and eat ice cream, Humphreys could easily be in Dallas or Denver. It’s the security gates, razor-wire topped walls and the M1 Abrams tanks that stand out. U.S. Army Garrison Humphreys is, in fact, in Pyeongtaek, 40 miles south of Seoul, South Korea. On a guided tour of Humphreys, Army Public Affairs Officer (PAO) Bob McElroy calls it “our little piece of America.” The Army calls it “the largest power projection platform in the Pacific.” Now in the final stage of a massive base expansion, when completed around 2020, Humphreys will have tripled in size to nearly 3,500 acres — roughly the size of central Washington, D.C. — making it the largest overseas American military base in the world, capping off over a dozen years of transformation and consolidation of the U.S. military footprint in South Korea. Humphreys is a major helicopter base, home to a rotational Attack Reconnaissance squadron. Attack assets like Apache, Blackhawk and Chinook helicopters fly out of Humphreys mostly at night and the 8,000 foot long airfield is large enough to land C-130s or other fighter jets from nearby Osan Air Base.