A mysterious force shook buildings from Pascagoula, Mississippi to Chumuckla, Florida Friday morning, but no one News 5 talked to knows exactly what caused it. Sometime between 9:00 and 9:30 am, a thunderous sound rumbled through the Gulf Coast. Not everyone felt it, but those who did all described it in much the same way. Ruthstein Woods in Eight Mile said, "I was laying in the bed watching TV and all of a sudden, it was like big boom, like the ceiling or something was like falling. I jumped up and ran and looked, and I looked outside, but I didn't see anything. It was like real, real shaking and stuff."

Donny George in Midtown felt it, too. "It was more like a sonic boom. I questioned whether or not the space shuttle had come back into the atmosphere, because I'm from Florida. And when the space shuttle comes in there, it makes a sonic boom, rattles the windows," said George. He added, "It rattled the building, rattled the windows. I thought somebody had hit our building."

It shook Harvey Smith as well. "I just heard a loud boom, I thought maybe some kind of sonic boom or something like an airplane breaking the sound barrier, or...but it shook my house. I still don't know what it was."

People from as far away as Pascagoula, Mississippi to Flomaton, Alabama to Chumuckla, Florida called News 5 to tell us they heard and felt something. But because not everyone felt it, speculation rose from the ground to the air. Some suspected military aircraft causing sonic booms by breaking the sound barrier. But News 5 was unable to confirm whether it was a jet. So, the mystery and the speculation continue.