rtokens: In addition to the 158 F / A-18 , F-14 and other fighter planes on the aircraft carriers Vinson and Enterprise , the Air Force air expeditionary force of 30 to 40 F-15 and F-16 fighter planes and fuel tankers is ready to fly from three U.S. bases in the United States , they said .
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tokens: U.S. plans rely heavily on U.S. air attacks on Iraqi forces , but there are also 23,000 U.S. troops in the region , according to defense officials .
ltokens: There were unconfirmed reports that Iran had sent troops into northern Iraq in response to Iraq 's attack .