David has had a lifelong interest in the subject of UFOs. He joined The Mutual UFO Network (MUFON) in 1990 as a Field Investigator Trainee. Since then, he has served as Field Investigator, State Section Director, as well as Illinois State Director. David is currently an independent UFO researcher.

During his tenure with MUFON, he had conducted numerous investigations into alleged UFO sightings and related experiences. He has discussed the subject of UFOs on numerous radio and television news programs. He has also lectured on the subject to various school and adult audiences over the years.

David has an extensive personal library of UFO books, journals, magazines, newspapers, and case files from around the world that covers the last 70+ years. With this he has been examining the detailed history of UFO sighting reports and related patterns.

David strives to have an open mind regarding the UFO phenomenon. However, he also acknowledges the need for a skeptical approach when examining each individual UFO report. Despite the large percentage of misidentifications and hoaxes in the UFO data, David recognizes what appears to be a core phenomenon beneath it all.

David received his Bachelor of Science degree in Psychology from Southern Illinois University at Edwardsville (SIUE). He received his Certification in Hypnotherapy from Mottin and Johnson Institute of Hypnosis in St. Louis, Missouri.

His book is Triangular UFOs: An Estimate of the Situation.