FORENSIC SCIENTIST

Expert Witness No. 146

Texas

Areas of Expertise:

•	Laboratory Accreditation
•	Firearm/ Tool Mark Identification
•	Footwear/ Tire Tread Identification
•	Controlled Substance Identification
•	Shooting Reconstruction
•	Crime Scene Investigation/ Reconstruction (Including Blood Spatter)
•	Crime Scene Photography
•	Trace Evidence Analysis (Hairs/ Fibers, Soil, Glass, Paint, etc.)
•	Lamp Filament/ Speedometer Examination

Present Positions: 

•        President, FT & C, LLP since 1997

•        Adjunct Professor/Forensic Training Coordinator, University of North Texas, since 1999 

Former Positions: 

•        Instructor of Chemistry, Blinn College, Brenham, Texas 1970-1974

•        Assistant Laboratory Director, Fort Worth Police Department, 1974-1983

•        Adjunct Instructor of Chemistry, Weatherford College, Weatherford, Texas 1976-1980

•        Adjunct Instructor of Criminal Justice, University of Texas at Arlington, 1980-1983

•        Supervising Criminalist, Arizona Department of Public Safety, 1983-1996 (retired)

•        Adjunct Instructor of Police Science, Northern Arizona University, 1984-1994

•        Firearms Examiner, Tulsa Police Department, Tulsa, Oklahoma 1996-1997

•        Adjunct Instructor of Police Science, Tulsa Community College, 1997

•        Laboratory Manager, Weckerling Scientific Laboratories, Carrollton, Texas 1997-1998

•        Criminalist, Forensic Consultant Services, Fort Worth, Texas, 1998-1999 

Formal Education: 

•        B.S., Chemistry, Sam Houston State University, 1968

•        M.A., Chemistry, Sam Houston State University, 1971 

Special Courses Attended: 

•        DEA Forensic Chemist Seminar,McLean, Virginia, 1975

•        FBI Glass Analysis Course,Quantico, Virginia, 1976

•        Applied Molecular Spectroscopy,Arizona State University, Tempe, Arizona, 1977

•        ATF Arson Residue Analysis Course, Rockville, Maryland, 1980

•        FBI Gunshot Residue Analysis Course,Quantico, Virginia, 1981

•        Ballistics and Handloading Course,Trinidad State College, Trinidad, Colorado, 1982

•        Polarized Light Microscopy, McCrone Institute, Austin, Texas, 1982

•        FBI Instrumental Analysis of Paints and Polymers Course,Quantico, Virginia, 1983

•        FBI Symposium on Footwear and Tire Tread Examination,Quantico, Virginia, 1984

•        X-Ray Fluorescence Class,Tracor Corporation, Flagstaff, Arizona, 1985

•        FBI Specialized Techniques in Firearms Identification Course,Quantico, Virginia, 1987

•        Ruger Police Armorer’s Course,Phoenix Police Academy, Phoenix, Arizona, 1987

•        Crime Scene Reconstruction Class,Dr. Henry Lee, Scottsdale, Arizona, 1988

•        AFTE Glock Armorer’s Class,Virginia Beach, Virginia, 1989

•        AFTE Remington 1100 Service Class,Houston, Texas, 1991

•        Photomicrography Class,Leitz Corporation, Phoenix, Arizona, 1991

•        Crime Scene Photography,Flagstaff, Arizona 1992

•        Wound Ballistics Class,Dr. Martin Fackler, Glendale, Arizona, 1992

•        Blood Spatter Interpretation and Crime Scene Reconstruction,Scottsdale, Arizona, 1993

•        FBI Footwear and Tire Tread Examination Seminar (presenter),Quantico, Virginia, 1994

•        SWAFS Shooting Reconstruction Class,Colorado Springs, Colorado, 1995

•        SWAFS Lamp Bulb Examination Class,Colorado Springs, Colorado, 1995

•        Accident Reconstruction and Low-Speed Crash Evaluation,Texas A&M University, 1996

•        Bloodstain Pattern Interpretation,University of North Texas, 2000

•        Recovery of Buried Remains,University of North Texas, 2001 

Professional Affiliations: 

•        Fellow of the American Academy of Forensic Sciences

•        Distinguished Member of the Association of Firearm and Tool Mark Examiners

•        Emeritus Member of the Southwestern Association of Forensic Scientists

•        Emeritus Member of the American Society of Crime Laboratory Directors

•        Member of the Association for Crime Scene Reconstruction

•        Member of Clandestine Laboratory Investigating Chemists Association 

Papers Presented : 

•        “Developing Regional Lab-User Agency Communication,” Southern and Southwestern Assns. of Forensic Scientists, Baton Rouge , Louisiana, 1986

•        “Mikrosil Casting in Firearms Examinations,” Assn. of Firearm and Tool Mark Examiners, Houston, Texas, 1991

•        “The Jennifer Wilson Homicide: A Study in Trace Evidence,” SW Assn. of Forensic Scientists, Tucson, Arizona, 1991

•        “The Use of Videomicroscopy in Footwear Comparisons,” Southern and Southwestern Assns. of Forensic Scientists, Shreveport, Louisiana, 1992

•        “The Reconstruction of a Double Homicide near Ashfork, Arizona,” SW Assn. of Forensic Scientists, South Padre Island, Texas, 1993

•        “Gunshot Residue Testing of Blood Stained Garments,” SW Assn. of Forensic Scientists, South Padre Island, Texas, 1993

•        “The Use of Hand-Held Laser Pointers in the Reconstruction of Events at Crime Scenes,” Southern and Southwestern Assns. of Forensic Scientists, Little Rock, Arkansas, 1994

•        “The Application of Videomicroscopy to Footwear Identification,” International Symposium on Footwear/Tire Tread Identification, FBI Academy, Quantico, Virginia, 1994

•        “Footwear/Tire Tread Identification-The Northern Arizona Perspective,” International Association for Identification, Phoenix, Arizona, 1994

•        “The Application of Videomicroscopy to Footwear Identification,” International Association for Identification, Phoenix, Arizona, 1994

•        “A Bizarre Homicide,” SW Assn. of Forensic Scientists, Houston, Texas, 1995

•        “The Portable Scopeman-A Powerful New Crime Scene Tool,” SW Assn. of Forensic Scientists, Fort Worth, Texas, 1996

•        “Defense Experts- The Good, The Bad, and The Ugly,” Texas Criminal Defense Lawyers Assn., El Paso, Texas, 1998

•        “Forensic Science for the Prosecution and the Defense,” University of Texas Law School, 2000

•        “The Defense of Shawn Berry,” Louisiana Criminal Defense Lawyers Association, Lafayette, Louisiana, 2000

•        “The Defense of Shawn Berry,” University of Texas Law School, 2000

•        “Private Forensic Labs - The Good, The Bad and The Ugly,” International Conference of the American Society for Industrial Security, 2001

•        “Bloodstain Pattern Interpretation,” Oklahoma City University Law School, 2002

•        “Crime Scene Deconstruction-Reconstruction,”Oklahoma City University Law School, 2002

 Specialized Forensic Classes Taught: 

(List of classes taught from 1984-1998 is available upon request) 

•        Shooting Reconstruction,El Paso Police Department, 1999

•        Shooting Reconstruction,Prince William County Police Training Center, Nokesville, Va.,1999

•        Shooting Reconstruction,Florida Dept. of Law Enforcement, Pensacola, Fla., 1999

•        Shooting Reconstruction,Salt Lake Co. Sheriff’s Training Center, Salt Lake City, Ut., 1999

•        Shooting Reconstruction,Tri-County Police Training Center, Fergus Falls, Minn., 1999

•        Clandestine Drug Lab Investigation,Tarrant Co. (TX) Drug Task Force, Cleburne, Tx., 1999

•        Blood Spatter Interpretation,Arlington Police Training Center, Arlington, Texas, 1999

•        Advanced Homicide Investigation,Turkish National Police, Ankara, Turkey, 1999

•        Advanced Homicide Investigation,Turkish National Police, Istanbul, Turkey, 1999

•        Shooting Reconstruction,Gastonia Police Training Center, Gastonia, N.C., 1999

•        Shooting Reconstruction,Tallahassee Police Department, Tallahassee, Florida, 1999

•        Shooting Reconstruction,Tri-Cities Police Academy, Richardson, Texas, 1999

•        Shooting Reconstruction,West Palm Beach Co. Sheriff, West Palm Beach, FL, 2000

•        Crime Scene Investigation, Office of the Attorney General , Guatemala City, Guatemala, 2000

•        Officer -Involved Shooting Incidents,University of North Texas, Denton, Texas, 2000

•        Advanced Shooting Reconstruction,University of North Texas, Denton, Texas, 2000

•        Shooting Reconstruction,Las Vegas Metro Police Department, Las Vegas, Nevada, 2000

•        Advanced Shooting Reconstruction,West Palm Beach Police Department, Florida, 2000

•        Shooting Reconstruction,East Texas Police Academy, Kilgore, Texas 2000

•        Shooting Reconstruction/Adv. Shooting Reconstruction,NYPD, New York City, New York, 2000

•        Shooting Reconstruction,Grossmont College, San Diego, California, 2000

•        Advanced Crime Scene Investigation/Reconstruction,University of North Texas, Denton, Texas, 2000

•        Shooting Reconstruction,Suffolk County Crime Lab, Hauppauge, New York, 2000

•        Shooting Reconstruction,Missouri State Police Academy, Columbia, Missouri, 2001

•        Shooting Reconstruction,Bannock County Sheriff’s Office, Pocatello, Idaho, 2001

•        Shooting Reconstruction,Syracuse Police Department, Syracuse, New York, 2001

•        Shooting Reconstruction,Federal Bureau of Investigation, Dallas, Texas 2001

•        Shooting Reconstruction,Washington Metropolitan Police, Washington, D.C., 2001

•        Shooting Reconstruction,Special Investigations Unit, Mississauga, Ontario, Canada, 2001

•        Shooting Reconstruction/Officer-Involved Shootings,Northwestern University, Chicago, 2001

•        Footwear/Tire Tread Evidence, Metropolitan Police Department, Washington, D.C., 2001

•        Officer-Involved Shootings,Baton Rouge Police Department, Baton Rouge, Louisiana, 2001

•        Officer-Involved Shootings,East Texas Police Academy, Kilgore, Texas, 2001

•        Bio-Terrorism,Kimberly-Clark Corporation, Dallas, Texas, 2001

·       Advanced Shooting Reconstruction, East Texas Police Academy, Kilgore, Texas, 2001

·       Shooting Reconstruction,Santa Barbara County Sheriff’s Office, Santa Barbara, California, 2002

·       Bio-Terrorism,Solutions 2000, Austin, Texas, 2002

•        Gunpowder and Primer Residues,University of North Texas, Denton, Texas, 2002

•        Advanced Shooting Reconstruction,University of North Texas, Denton, Texas, 2002

•        Shooting Reconstruction,Metropolitan Police Department, Washington, D.C., 2002

•        Shooting Reconstruction/Officer-Involved Shootings,Northwestern University, Chicago, 2002

•        Shooting Reconstruction, Special Investigations Unit, Mississauga, Ontario, Canada, 2002

•        Shooting Reconstruction,Federal Bureau of Investigation, Dallas, Texas 2002

•        Shooting Reconstruction,El Paso Police Department, El Paso, Texas 2002  

Publications:

List available by request

Professional Offices Held: 

Association of Firearm and Tool Mark Examiners: 

•     Reviewer forAFTE Journal, 1989-present 

Southwestern Association of Forensic Scientists: 

•       Program Chairman, 1984

•       Member, Board of Directors, 1986-1988

•       Chair of Professional Development, 1988-1990

•       SWAFS Journal Editor, 1988-1992

•       President, 1993-1994  

•        Chairman, Board of Directors, 1994-1995

•        Fall Meeting Workshop Chair, 1993 

American Society of Crime Lab Directors: 

•       Member, Board of Directors, 1986-1989

•       Chair, Publication Committee, 1986-1987

•        Chair, Membership Committee, 1987-1989

•       Laboratory Accreditation Inspector, 1987-1995

•       Laboratory Accreditation Board Member, 1996

•       Forensic Science Operations and Program Committee, 1988-1991

•       Member, Management Committee, 1992-1994

•       Chair, Crime Scene Investigation Standards Committee, 1996 

Awards/Honors: 

•        “Distinguished Member Award,” AFTE, 1988

•        “James Zotter Award,” SW Assn. of Forensic Scientists, 1991, (“For Outstanding 

       Dedication and Contributions to the Southwestern Association of Forensic Scientists and Forensic Science.”)

•        “Best Technical Paper,” Southern and SW Assns. of Forensic Scientists, 1992, “The Useof Videomicroscopy in Footwear Comparisons”

•       “Best Technical Paper,” SW Assn. of Forensic Scientists, 1993, “The Reconstruction of a Double Homicide near Ashfork, Arizona”

•        “Best Technical Paper,” Southern and SW Associations of Forensic Scientists, 1994, “The Use of Hand-Held Laser Pointers in the Reconstruction of Events at Crime Scenes,” co-authored with Max Courtney

•        Awarded Emeritus status in the American Society of Crime Laboratory Directors, 1996

Last updated 10/10/2003