HOLIDAY — The calls started around 9:30 a.m., say 911 operators.
People from Holiday up to Spring Hill, at least 25 of them in Pasco County, began reporting an ominous boom, loud enough to rattle windows. A handful of people even called the fire department.
General speculation was that the noise came from some kind of military maneuver over the Gulf of Mexico. But officials at MacDill Air Force Base say it wasn't them.
Lt. Patrick Gargan, a spokesman for the 6th Air Mobility Wing at the base, said MacDill has had noise complaints but typically doesn't get calls about booms.
"At this time, we don't know anything about the reported loud noises this morning," he said. "If we hear anything, we'll let you know."
Pasco Fire Rescue Chief Don Campbell said crews had not gone out to callers' homes and that no property damage was reported.