United States 13 HISTORY 12 TECHNOLOGY & ENGINEERING 12 Air power 5 History 4 Military operations, Aerial 4 Air warfare 3 Persian Gulf War (1991) 3 Persian Gulf War, 1991 3 Strategic aspects of individual places 3 Developing countries 2 Geschichte 2 LANGUAGE ARTS & DISCIPLINES 2 Low-intensity conflicts (Military science) 2 Luftwaffe 2 Military policy 2 Military relations 2 National security 2 Strategy 2 Twenty-first century 2 USA 2 A-10 (Jet attack plane) 1 ANZUS Council 1 Aerial reconnaissance 1 Aeronautics, Military 1 Airlift, Military 1 Armed Forces 1 Askerlik sanatı ve bilimi 1 Astronautics 1 Astronautics and civilization 1