WESTFORD, Mass.--(BUSINESS WIRE)--NetScout Systems, Inc. (NASDAQ: NTCT), an industry leader for advanced network, application and service assurance solutions, announced today that the Company has filed a preliminary Registration Statement on Form S-4 and a preliminary Proxy Statement with the U.S. Securities and Exchange Commission (SEC) in connection with its proposed acquisition of the Communications business of Danaher Corporation (NYSE:DHR). While this Registration Statement and Proxy State