He, and his surgical team, performed 17 surgeries on alleged abductees, resulting in the removal of thirteen separate and distinct objects suspected of being "implants". These objects have been scientifically investigated by some of the most prestigious laboratories in the world including Los Alamos National Labs, New Mexico Tech, and the University of California at San Diego. Their findings have been baffling and some comparisons have been made to Meteorite Samples. In addition, some of the tests show isotopic ratios not of this world.
Dr. Leir has also been involved in investigations of other areas involving physical evidence. He has traveled to Brazil and performed exhaustive research into the Varginha, Brazil case. In 2003, Dr. Leir, the National Institute for Discovery Science (NIDS) and other world scientists completed a DNA study pertaining to evidence collected in a famous California Abduction Case.
He had been interested in the subject of extraterrestrial related phenomena since his early childhood and had several sightings of unknown flying objects.
He also had two Near-Death Experiences. Because of this, his cousin Kenneth Ring Ph.D., eminent author of numerous books, including The Omega Project, relinquished all of his personal research pertinent to the subject of Ufology to Dr. Leir. Over the past 15 years, Dr. Leir pursued a quest for knowledge within this field with great intensity.
As a result he served as a medical consultant to MUFON as well as holding the office of State Section Director for Ventura and Santa Barbara Counties.