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.

He is also the Executive Director of the National UFO Historical Records Center, which is a collection of material, reports and a repository for data from around the world. Dozens of UFO researchers have donated their files to the Center.
 
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.

David is a Registered Polysomnographic Technician (RPSGT) and assisted in diagnosing and treating patients that suffered from various sleep disorders for several years at a major St. Louis-based medical facility. He has worked within the medical field for over twenty years.   His book is Triangular UFOs: An Estimate of the Situation. He might by the world’s foremost authority on triangular-shaped UFOs.