Residents along North Carolina's southern coast say they have been rattled by unexplained booms twice in 24 hours.
The StarNews of Wilmington reported that people called emergency dispatchers in New Hanover and Brunswick counties Saturday morning to ask about the noises and to report their homes shaking.
Residents also reported booms and rattling windows and doors Friday afternoon.
Stoney Creek Plantation resident Brook Lasko told the newspaper that the booms felt like bombing exercises that she remembered from when she lived near Fort Bragg.
Officials at nearby airports and military bases say there was no training going on that could explain the booms. The U.S. Geological Survey had no report of an earthquake in the area that could explain the shaking.