Loud boom in Alabama?

Okay so reports from multiple people and agencies. Nobody has a clue. Sounds like glp material if you ask me. Let put our collective tin foil hats together and find the truth if there is any.


From article:
"What was that loud boom? Apparently, no one knows yet. But a lot of people heard it, and felt it. Birmingham area law enforcement agencies said they've received reports, and so has St. Clair County EMA. The areas that experienced whatever it was i...
[link to www.al.com]