Luis Elizondo, a former Pentagon counterintelligence official, has made startling claims in his new memoir, 'Imminent: Inside the Pentagon's Hunt for UFOs,' alleging that the U.S. government has recovered 'alien beings' and advanced technology from unidentified vehicles, particularly from the 1947 Roswell crash. He asserts that these 'biological specimens' are of nonhuman origin and that the U.S. has known about extraterrestrial life for decades. Elizondo, who previously led the Advanced Aerospace Threat Identification Program (AATIP), details a theory that electromagnetic pulses may have rendered these crafts vulnerable during their descent. His allegations have reignited long-standing debates around UFO sightings and government secrecy, drawing attention from other officials like Christopher Mellon, who hinted at additional recoveries in Arizona post-Roswell. The memoir's explosive claims come amidst a surge of public interest in UFO phenomena, making it a significant addition to the ongoing discourse about extraterrestrial life. Elizondo's past role in releasing iconic UFO videos further establishes his credibility in this controversial subject.