Board of Governors Universities, Microbiological Sciences; Molecular Modeling of ¶-Amino Acids,
Chicago, IL November 1994.
Eastern Region of Firearms and Toolmark Examiners; Evaluation of Gunshot Residue and Instrumental Analysis Techniques, Annapolis, MD Nov. 1995.
Public Defender Service, District of Columbia; Firearms Identification and You, Washington, DC June 1995.
Metropolitan Police Department, Gun Recovery Unit; Firearms Identification Unit and Proper Handling of Firearms, Washington, DC 1995.
Metropolitan Police Department, Crime Scene Search School; Firearms Identification and You, Washington, DC June 1997.
United States Attorneys of the District of Columbia; Demonstrative Evidence; The Do's and Don't of Handling Firearms in the Courtroom, Washington, DC March 1996.
Criminal Investigators Class, Hosted by The U.S. Navy; Introduction To Firearms Identification, Bolling Air Force Base, Washington, DC August 1998.
D.C. "CRIME WATCH" Video; Demonstration of Firearm Discharge; Washington, D.C. June 1999.
TIME MAGAZINE; Demonstration of Firearms Identification for article, Washington, D.C. July 1999.
United States Attorneys of the District of Columbia; Firearms Examination Section Informational, Washington, DC February 2000.
United States Attorneys of the District of Columbia; Firearms Examination Section Informational Washington, DC March 2001.
Metropolitan Police Dept, Detectives; Firearms Examination Informational, Washington, DC March 2001.
School of Police Supervision; Police Supervision in a Diverse World, Institute of Police Science, Metropolitan
Police Department, Washington, DC, September 2003.
United States Attorneys of the District of Columbia; Firearms Examination Section Informational Washington, DC November 2003.
Citizens Action Committee, First Police District; Firearms Examination Section Informational Washington, DC February 2004.
Assoc. of Forensic Quality Assurance Managers Effective Supervision in an Law Enforcement Environment;, Largo Fla. October 2005.
Shift ID School; Firearms Examination Unit Informational. Public Safety Training Academy, Montgomery County Police Department, Rockville MD, 2009 – 2012
Force Investigation Team (Internal Affairs) Firearms Examination Section Informational Washington, DC August 2012.