In the days since the U.S. 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 intriguing hypothesis about what one of those three objects could be: a "missing in action" globe-trotting balloon belonging to an Illinois-based hobbyist club. The Northern Illinois Bottlecap Balloon Brigade’s (NIBBB) silver-coated, party-style "pico balloon" reported its last position on Feb. 10 at nearly 40,000 ft. off the west coast of Alaska.