Dr. Steven Greer is an American physician and ufologist known for his work in the field of unidentified flying objects (UFOs) and extraterrestrial life. He founded the Center for the Study of Extraterrestrial Intelligence (CSETI) in 1990, which aims to promote peaceful contact with extraterrestrial civilizations. Greer has also been involved in various documentaries and books discussing government secrecy regarding UFOs and advanced technologies. In addition to his research, Dr. Greer has organized several events, including the Disclosure Project, which seeks to gather testimonies from former military and government officials about their experiences with UFOs. His work has sparked both interest and controversy, making him a prominent figure in the ongoing discussion about UFOs and potential alien life.