In the days since the Air Force shot down three unidentified objects out of the sky, questions linger about just what these objects actually were. On Thursday, a report by Aviation Week offered an hypothesis about what one of those three objects could be: a "missing in action" globe-trotting balloon belonging to an Illinois-based hobbyist club. In this photo provided by Chad Fish, a large balloon drifts above the Atlantic Ocean, just off the coast of South Carolina, with a fighter jet and its contrail seen below it, on Saturday, Feb. 4. In this photo provided by Chad Fish, a...