WESTFORD, Mass.--(BUSINESS WIRE)--NetScout Systems, Inc. (NASDAQ: NTCT), an industry leader for advanced network, application and service assurance solutions, announced that it has received unconditional clearance from the Antitrust Division of the U.S. Department of Justice (DOJ) for its proposed acquisition of the Communications Business of Danaher Corporation (NYSE:DHR). As previously announced on October 13, 2014, NetScout entered into a definitive agreement to acquire Danaher’s Communicati