Latvia contracts with Tetra Tech for Innovative Airspace Concept Development and Implementation ARLINGTON, Va., March 2, 2016 (GLOBE NEWSWIRE) -- Latvia's Air Navigation Service Provider "Latvijas gaisa satiksme" (LGS), which provides Air Navigation Services in the Riga flight region, has...

TV White Space Partnership Wins P3 Impact Award PASADENA, Calif., Oct. 5, 2015 (GLOBE NEWSWIRE) -- Tetra Tech, Inc. (NASDAQ: TTEK) is pleased to announce that the TV White Space Partnership (TVWS), implemented under the United States Agency for...