Redstone Arsenal says “louder than expected noise levels” not caused by rocket engine testing
Snippet of Article: "In a post made Monday evening, Redstone Arsenal officials said a “rumble” people would hear at that time was the “sound of rocket engine hotfire testing.” ...On Tuesday, officials announced that the “louder than expected noise levels” were not a result of the rocket engine hotfire testing. ...At this time, they have not said what the sound was exactly. "
Source: www.waff.com