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Dictionary

Unit'ed States' Air' Force"

the permanent or regular military air force of the United States, established in 1947 as a separate service under the authority of the Department of Defense: a branch of the U.S. Army before 1947. Abbr.: USAF

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

United States

United States Air Force Academy

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