Mr. Gardner holds a Master degree in Computer and Information Systems Management from Webster University, a Bachelors degree in Criminal Justice from Wayland Baptist University and Associates degree in Police Science from Central Texas College. He graduated first in his class at the Scenes of Crime Officers Course, New Scotland Yard, Hendon England in 1985 and between 1988 and 1996 served as an adjunct professor for Central Texas College in their police science program. He is a former President of the Rocky Mountain Association of Bloodstain Pattern Analysts (RMABPA), as well as the Association for Crime Scene Reconstruction (ACSR) and has served as the Chairmen of the Education Committee for both the RMABPA and the International Association of Bloodstain Pattern Analysts (IABPA). Mr. Gardner is recognized by ACSR as both a Distinguished Member and Fellow. He was a charter member of the FBI Scientific Workgroup on Bloodstain Pattern Analysis (SWGSTAIN) and chaired the Taxonomy and Terminology sub-committee for ten years.
Between 1990 and 2012 Mr. Gardner was certified by the International Association for Identification as Senior Crime Scene Analyst. He is an active instructor and consultant throughout the United States and the world in crime scene analysis, bloodstain pattern analysis and crime scene investigation; teaching to a variety of groups ranging from police and investigative organizations to trial counsel professional development groups. He is co-author of the text Bloodstain Pattern Analysis, With an Introduction to Crime Scene Reconstruction, 3rd Edition. Mr. Gardner authored the text Practical Crime Scene Processing and Investigation in 2004, which is now in its second edition. In 2007 he co-authored the text Practical Crime Scene Analysis and Reconstruction with Tom Bevel. He is also a contributor to the Wiley Forensic Encyclopedia and has authored a number of scientific journal articles related to bloodstain pattern analysis and crime scene analysis.