Luis Elizondo is a former U.S. military intelligence officer best known for his work related to the Pentagon's Advanced Aerospace Threat Identification Program (AATIP). He served as the director of AATIP, a secretive initiative focused on investigating unidentified aerial phenomena (UAP). Elizondo gained public attention after resigning from the Department of Defense in 2017, citing concerns about the lack of government transparency regarding UAP encounters. Following his resignation, he collaborated with the To The Stars Academy of Arts & Science, further advocating for serious scientific inquiry into UAP. Elizondo has appeared in documentaries and media interviews, emphasizing the potential implications of UAPs on national security and aviation safety.