The monitoring aircraft of Sky Monitor were initially drawn from the NATO Airborne Early Warning squadron based at NATO Air Base Geilenkirchen in Germany, but Aviano Air Base in Italy, Preveza in Greece, and Trapani in Italy were all used as forward operating bases. As the operation expanded, the British No. 8 Squadron RAF and the French E-3F squadron at Avord Air Base were also used. All of these NATO forces fell under the authority of Allied Forces Southern Europe, commanded by Admiral Jeremy Boorda of the United States Navy. Eleven NATO countries provided personnel or aircraft for the operation: Belgium, Canada, Denmark, Germany, Greece, Italy, the Netherlands, Norway, Portugal,
