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

Employment: 

President, FT & C, LLP since 1997

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

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, 1980

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, 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

Courses Taught:

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 for AFTE 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

Awarded Emeritus status in the Southwestern Association of Forensic Scientists, 1997

Keywords:

Forensic Scientist Expert Witness, Crime Scene and Shooting Investigation and Reconstruction Expert Witness, Tool Marks Expert Witness, Ballistics Expert Witness, Trace Evidence Expert Witness, Semen Expert Witness, Drug Analysis Expert Witness, Blood Spatter Expert Witness , Latent Prints Expert Witness, Product Tampering Expert Witness, Court Exhibits Expert Witness, Firearm and Tool Mark Examinations Expert Witness, Trace Evidence Analysis Expert Witness, Bloodstain Pattern Analysis Expert Witness, Controlled Substance Identification Expert Witness, Crime Scene Reconstruction Expert Witness, Shooting Incident Reconstruction Expert Witness, Gunpowder and Primer Residue Expert Witness Footwear and Tire Tread Impression Evidence Expert Witness

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