It's the bump in the night that has Osceola County residents asking each other "Did you hear that?"
We've gotten email after email, not to mention Facebook posts, from people who say they're hearing a boom around the same time every night. Not even the Osceola County Sheriff's Office has an answer.
"It was like a 'BOOM!' Then, the windows kinda shook," said Kissimmee resident Daryl Mercado.
"A loud BOOM sound...like they throwed a bomb," explained young AJ.
His mother, Lori Chezem, said, "Loud booms. It reminds me of when the space shuttle used to come in -- the Sonic Boom."
Kids and adults alike are talking about it. But what exactly is it?
Chezem is in St. Cloud and was one of the people who emailed us about these mysterious booms. We're also hearing from people in Kissimmee and even as far away as Haines City in Polk County.