+ San Francisco Police Department, San Francisco Police Academy; 1972-1977; Policy, Procedure, and Best Practices Writer, Author, and Editor; Recruit Instructor; In-Service Instructor; Specialist Team Instructor; Hostage Negotiator Team Instructor.

+ 504th Military Police Battalion; The Presidio of San Francisco; 1975; “Hostage Cases,” Instructor.

+ The National Conference of Christians and Jews, Inc.; San Francisco; 1975; “Crisis Management in Law Enforcement,” Presenter.

+ Mystery Writers of America; Oakland, California; 1975; “Hostage Cases,” Presenter.

+ Monterey County Peace Officers Association (Monterey, California); 1975; “Hostage Cases,” Presenter.

+ City College of San Francisco, Criminology Department; 1975-1978; “Introduction to Criminology,” Instructor.

+ The California Community Colleges; June 23, 1977; Community College Instructor Credential for Public Services and Administration, Police Science.

+ Fremont Police Department; Fremont, California; 1977; “Hostage Negotiations,” Instructor.

+ San Jose State University, Department of Administration of Justice, Administration of Justice Bureau; San Jose, Phoenix; 1977-1983; “Basic and Advanced Hostage Negotiation,” Instructor.

+ Northwestern University, The Traffic Institute; Evanston, Phoenix, Orlando; 1978-1983; “Basic Hostage Negotiation Course and Commanders Course on Hostage Incidents,” Instructor.

+ Justice Training Institute, Thomas H. Anderson; Phoenix, Arizona; 1978; “Hostage Negotiation Course,” Instructor.

+ Kansas City Police Department; Kansas City, Missouri; 1978; “Hostage Negotiation Course,” Instructor.

+ California State Psychological Association; Monterey, California; 1978; “Hostage Negotiation,” Presenter with Chris Hatcher, Ph.D.

+ Mental Research Institute; San Francisco; 1978; “Emergency Psychology and Hostage Negotiations,” Presenter with Diana S. Everstine, Ph.D.

+ Texas Department of Public Safety, Law Enforcement Academy; Austin, Texas; 1979; “Implementation Tactics (Hostage Cases),” Instructor.

+ Royal Canadian Mounted Police (RCMP), Canadian Police College; Ottawa, New London, and Regina, Canada; 1979; “Hostage Negotiation Course,” Instructor.

+ Eden Prairie Department of Public Safety, Police Division; Eden Prairie, Minnesota; 1979; “Hostage Negotiating Course,” Instructor.

+ Golden Gate University; San Francisco; 1984; “Crisis Negotiations,” Presenter.