What Are These UFO Files? The U.S. government has released its largest collection of UFO files to date. While no aliens have been confirmed, the files contain five cases that remain a mystery. Scientists, military officials, and government agencies cannot explain these incidents. These reports come from credible sources like Navy pilots and NASA astronauts. Here’s what we found. How Did the Files Come Out? For many years, the term "UFO" was often met with laughter. Today, the