Perot Systems Corp. executive Greg Bedner said he was thrilled when the 2004 U.S. budget plan was released last week because it contained $500 million for improving security at communications and nuclear plants. Perot Systems, the computer services company founded by H. Ross Perot, purchased ADI Technology Corp. in July in anticipation of increased government spending on security. Bedner was chief executive of ADI, which had experience in developing and managing computer systems to improve safety at nuclear power plants. Full Story