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air traffic control
(Encyclopedia)air traffic control, the system by which airplanes are safely routed into and out of major airports. Air traffic control in the United States is centered in a number of regional control centers that r...automatic frequency control
(Encyclopedia)automatic frequency control: see automatic tuning control. ...automatic tuning control
(Encyclopedia)automatic tuning control (ATC), method or device to keep a radio or television receiver automatically tuned to a desired frequency or channel. Assuming that the receiver is at least approximately tune...riot-control gas
(Encyclopedia)riot-control gas: see poison gas; tear gas. ...Hahn, James Kenneth
(Encyclopedia)Hahn, James Kenneth, 1951–, American politician. Born into a Los Angeles political family, he is a Democratic lawyer who first served in city government (1981–85) as controller. As city attorney (...Kassebaum-Baker, Nancy Landon
(Encyclopedia)Kassebaum-Baker, Nancy Landon kăsˈəbômˌ, –boumˌ [key], 1932–, U.S. senator from Kansas (1979–97), b. Topeka, Kans. A Republican and the daughter of Kansas governor Alfred Mossman (Alf) Lan...Gatling, Richard Jordan
(Encyclopedia)Gatling, Richard Jordan, 1818–1903, American inventor, b. Winton, N.C. He invented agricultural implements, which he manufactured in St. Louis, and then studied medicine in Indiana and Ohio, but he ...Centers for Disease Control and Prevention
(Encyclopedia)Centers for Disease Control and Prevention (CDC), agency of the U.S. Public Health Service since 1973, with headquarters in Atlanta; it was established in 1946 as the Communicable Disease Center. The ...Helms, Jesse Alexander
(Encyclopedia)Helms, Jesse Alexander, 1921–2008, U.S. senator from North Carolina (1973–2003), b. Monroe, N.C. He served in the navy, chiefly as a recruiter, during World War II. A local radio broadcasting exec...Ashcroft, John
(Encyclopedia)Ashcroft, John, 1942–, American political figure, b. Chicago, grad. Yale Univ. (B.A., 1964), Univ. of Chicago School of Law (J.D., 1967). A conservative Republican, Ashcroft was Missouri state audit...Browse by Subject
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