Veolia Environnement, North America, an environmental services company, has moved its North American headquarters to Chicago.
Mack Trucks, previously based in Allentown, Pa., has moved its headquarters and most support functions to Greensboro, N.C.
San Francisco-based engineering firm URS Corp. has acquired Dallas-based engineering firm LopezGarcia.
Oklahoma City-based Terex, a construction equipment manufacturer, has acquired Rock Hill, S.C.-based Hydra Platforms, a manufacturer of bridge inspection and repair platforms.
White Plains, N.Y.-based environmental consulting firm Malcolm-Pirnie has acquired Richmond, Va.-based water/wastewater planning, design and management firm R. Stuart Royer & Associates.
Lake Mary, Fla.-based SunGard has reorganized its public sector division into two business units, which will be called Local Government and K-12 Education.
Andover, Mass.-based engineering firm Dynamics Research Corp. has acquired Arlington, Va.-based management consulting firm Kadix Systems.