A small, globe-trotting balloon declared “missing in action” by an Illinois-based hobbyist club on Feb. 15 has emerged as a candidate to explain one of the three mystery objects shot down by four heat-seeking missiles launched by U.S. Air Force fighters since Feb. 10. 

The club—the Northern Illinois Bottlecap Balloon Brigade (NIBBB)—is not pointing fingers yet. 

To read more, click here.