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Previously the United States Army Air Corps, part of the [[United States Army]], the U.S. Air Force is the youngest American military branch. It was formed as a separate branch of the military on September 18, 1947. Tasked with protecting U.S. air space and supporting ground troops, the Air Force relies on the most technologically advanced military aircraft in the world. Operating those planes are highly trained pilots backed by technically skilled support crews.

Previously the United States Army Air Corps, part of the [[United States Army]], the U.S. Air Force is the youngest American military branch. It was formed as a separate branch of the military on September 18, 1947. Tasked with protecting U.S. air space and supporting ground troops, the Air Force relies on the most technologically advanced military aircraft in the world. Operating those planes are highly trained pilots backed by technically skilled support crews.

The USAF is the largest and the most technologically advanced air force in the world, with about 6057 manned aircraft in service (4,273 USAF; 1,313 Air National Guard; and 400 Air Force Reserve); approximately 160 Unmanned Combat Air Vehicles, 2161 Air-Launched Cruise Missiles, and 1900 Intercontinental Ballistic Missiles; and as of September 30, 2005, had 351,800 personnel on active duty, 122,750 in the Selected and Individual Ready Reserves, and 106,800 in the Air National Guard. An additional 14,000 personnel were in the Standby Reserve and the Air Force employed 166,730 civilian personnel.  

The USAF is the largest and the most technologically advanced air force in the world, with about 6057 manned aircraft in service (4,273 USAF; 1,313 Air National Guard; and 400 Air Force Reserve); approximately 160 Unmanned Combat Air Vehicles, 2161 Air-Launched Cruise Missiles, and 1900 Intercontinental Ballistic Missiles; and as of September 30, 2007, had 328,808 personnel on active duty, 70,303 in the Selected and Individual Ready Reserves, and 106,254 in the Air National Guard. An additional 10,500 personnel were in the Standby Reserve and the Air Force employed 141,573 civilian personnel.  

The USAF is currently planning a massive Reduction-in-Force (RIF). Because of budget constraints, the USAF will reduce the service's current size by 40,000 full time equivalent positions by 2011, with approximately half to be eliminated in FY 2007. Approximately 35,000 active duty positions, or one year's cycle of enlistments and retirements, will be eliminated over 5 years. The current size of the active-duty force is roughly 70% of that of the USAF at the end of the first [[Gulf War]] in 1991.

The USAF is currently planning a massive Reduction-in-Force (RIF). Because of budget constraints, the USAF will reduce the service's current size by 40,000 full time equivalent positions by 2011, with approximately half to be eliminated in FY 2007. Approximately 35,000 active duty positions, or one year's cycle of enlistments and retirements, will be eliminated over 5 years. The current size of the active-duty force is roughly 70% of that of the USAF at the end of the first [[Gulf War]] in 1991.