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NASA Awards Construction Contract for Rocket Engine Testing:"WASHINGTON, Feb. 19 /PRNewswire-USNewswire/ -- NASA signed a contract Thursday with American Tank and Vessel Inc. of Mobile, Ala., for the installation of a test cell diffuser and associated systems in the A-3 test stand at NASA's Stennis Space Center in Mississippi. The five-year, indefinite delivery, indefinite quantity contract's value is not to exceed $45 million."