The events of April 16, 2007 and the response, investigation, and recovery at Virginia Tech that followed placed extraordinary demands on telecommunications network resources and university Information Technology professionals. This report provides a comprehensive inventory and analysis of the communications infrastructure and information systems used during this time period. It addresses resources depended upon by emergency responders, investigating law enforcement officers, university officials, media, faculty, staff, students, and families of the university community. It includes information about communications resources owned and operated by the University and relevant resources owned and operated by providers and responders.