Henry Lim Cho holds an M.A. in human services with an emphasis in criminal justice leadership from Concordia University, St. Paul, Minnesota. He has worked in the field of criminal justice for more than 10 years and has held positions as a community service officer, police officer and detective. He has also worked in private security. He retired from the Rosemount (Minnesota) Police Department with the rank of sergeant. Sergeant Cho has experience as a use-of-force instructor and as a crime scene investigator. His professional memberships include the Text and Academic Authors Association, Minnesota Police and Peace Officers Association, International Association of Identification--Minnesota Chapter, Minnesota Sex Crimes Investigator Association, High Technology Crime Investigation Association, National White-Collar Crime Center and the Fraternal Order of Police. Sergeant Cho co-authored POLICE OPERATIONS and INTRODUCTION TO LAW ENFORCEMENT AND CRIMINAL JUSTICE, and he has been published in the Minnesota Police Journal.