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We have received hundreds of reports of a "loud boom" in Marshall, Madison, Lawrence, Limestone, Morgan, DeKalb, and Jackson counties. It happened about 11:10 Thursday night.
You may have felt something shake your house and rattle your windows. We could even feel it here at NewsChannel 19, in downtown Huntsville.
Officials at Redstone Arsenal now confirm the sound was because of a rocket motor test at Test Area 4.