"An Arlington County consulting firm that evaluated the emergency response to the 1999 Columbine High School shootings and other public safety crises has been hired by state officials to assist the panel that will investigate the Virginia Tech massacre."

-- Washington Post article

TriData, headed by Philip S. Schaenman, is a division of defense contractor Systems Planning Corp., whose speciality is "...system analysis and system planning principally for the Intelligence Community, the Department of Defense and the Department of Homeland Security." The vice-president of SPC at the time of the Columbine shootings was Dov Zakheim, an ardent Zionist and member of PNAC.

UPDATE: Here is the final report of the investigation panel. See "Appendix L", a summary of school shootings over the past 30 years.