Global Com has recently completed a major communications infrastructure upgrade for the Defense Security Service (DSS). This particular project had to be planned and executed so that the customer remained fully operational at all times. Not a moment of downtime was acceptable. The scope of our work included installation of new cabling and connectivity components, all ancillary LAN room work and finally the removal of all legacy cabling systems. While this project presented some unique challenges, including working in a SCIF environment, Global Com had the experience and expertise to complete this project on time and within budget.