Decimomannu Air Base — Decimomannu, Italy

Decimomannu Air Base carries the code DCI and sits on the Italian island of Sardinia, not far from Cagliari, long known within NATO circles simply as 'Deci.' The base built its reputation as a premier air combat training site, thanks to Sardinia's relatively unrestricted airspace and generally favorable flying weather, hosting multinational exercises and squadrons from various NATO air forces over the years. Though some training programs once based there have since relocated elsewhere in Europe, the Italian Air Force continues to operate from DCI, and it remains an active military installation rather than a civilian airport. DCI's history reflects Sardinia's broader role as a training ground for European air power during and after the Cold War.