Glenn Grana is a retired Police Officer/Narcotics Investigator with an extensive background in criminal and narcotic investigations, as well as crime analysis. Post law enforcement, he was employed as a police contractor, under DOS and DOD task orders, overseas as an International Police Advisor in Afghanistan and Iraq. In 2012, Grana obtained a master's degree in Criminal Justice Administration and in 2016, was hired as an adjunct professor of Criminal Justice and Intelligence Studies at Roberts Wesleyan College.
Grana co-wrote the textbook Crime and Intelligence Analysis - An Integrated Real-Time Approach with James Windell. The textbook was originally published in 2016, and now is a second edition, is being used by many colleges across the country.