Unidentified Aerial Phenomena (UAP) refers to objects or lights observed in the sky that cannot be easily identified or explained. This term is often used in place of "UFO" to emphasize a more scientific approach to studying these occurrences. UAP can include various shapes and behaviors, and they have been reported by both civilians and military personnel. Governments, including the United States, have shown increased interest in UAP, leading to investigations and reports. The U.S. Department of Defense established the Unidentified Aerial Phenomena Task Force to analyze sightings and assess any potential threats to national security.