The DeKalb-Peachtree Airport (PDK) is located on a part of the old Camp Gordon, a World War I Army training base. The airport is classified as a a general aviation relieverairportfor the Atlanta metropolitan area. A reliever airport is a general aviation airport which reduces air carrier airport congestion by providing service for the smaller general aviation aircraft. The term "general aviation" encompasses the entire spectrum of aircraft and aircraft related businesses and services including the most sophisticated corporate & business jets, aircraft charters, training aircraft, helicopters, aircraft maintenance and refurbishment, and personal aircraft used for business and recreational purposes.