David has had a lifelong interest in the UFO subject and has actively investigated and researched it for 28 years. 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 several radio and television news programs over the years. He has also lectured on the subject to numerous school and adult audiences including at the university level.
David has assisted the History, Learning, Discovery, Science, and Smithsonian Channel on UFO documentaries over the years in addition to independent productions.
David has one of the largest personal libraries of UFO books, journals, magazines, newspapers, and case files from around the world that covers the last 65 years. With this he has been examining the detailed history of UFO sighting reports and related patterns.
Recent evidence of his historical research is his newly-published book, Triangular UFOs: An Estimate of the Situation. Here, he has provided a comprehensive analysis of triangular UFOs. He has collected, collated, and analyzed hundreds of reports. In the process, he has created a detailed profile of these objects and written a rich narrative of their history. He tackles the arguments made by skeptics that dismiss these triangular UFO reports outright. He also addresses the claims of so-called insiders who claim these objects are a creation of the U.S. military.
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.
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 also worked for a global medical equipment company for 13 years.
David currently works in the healthcare field for a large New Mexico-based hospital network and resides in the Albuquerque, NM area with his wife and two daughters.

At the 2016 Ozark Mountain UFO Conference, David was awarded the Lucius O. Farish Award for Excellence in UFO-Related Research and Education. A genuine honor only awarded to three other recipients in the field.
Triangular UFOs
An Estimate of the Situation
There is no one I would rather see write a book on UFOs more than David Marler. From the countless conversations I have had with him on the subject over recent decades, I have come to know, and respect, his invariably objective and sober-minded approach to the subject. Moreover, he is a meticulous researcher, and he possesses a unique blend of wisdom, insight, and common sense, which one rarely encounters in any field of investigation.
The reader can rest assured that what is written here on the subject of triangular UFOs can be relied on, without question. A compelling read!
Peter B. Davenport
National UFO Reporting Center