In this image from video provided by the Department of Defense labeled Gimbal, from 2015, an unexplained object is seen at center as it is tracked as it soars high along the clouds, traveling against the wind. “There's a whole fleet of them,” one naval aviator tells another, though only one indistinct object is shown. “It's rotating." The U.S. government has been taking a hard look at unidentified flying objects, under orders from Congress, and a report summarizing what officials know is expected to come out in June 2021. Department of Defense via AP