Fort Leonard Wood answered numerous calls today (9-27) about a loud boom that was heard around 9:30 throughout Laclede County. According to Jeff Maddy, PIO for the Fort, some people even reported hearing it in Greene County.

One woman who emailed KSPR News said "it knocked the dust off the rafters where i work. Thunder doesn't do that!"

Another person tells KSPR News the owner of the Willard Quarry outside Lebanon told him the sound was not the result of any blasting.

Fort Leonard Wood has a cannon range on the west side of the post. It's used often by the Missouri Air National Guard for bombing practice.

"They use no live ammunition," Maddy said. "Just sacks of flour and things like that to mark the drop." Maddy said some people suggested it was a sonic boom, the sound made by a plane that breaks the sound barrier.

Maddy said one caller told him Whiteman Air Force Base told them it wasn't any of their aircraft. Maddy is waiting to hear back from the Air National Guard in St. Louis.

A woman posted on the KSPR Facebook page that she and several others heard a loud boom in Bolivar Sunday evening.