"Sarah... Come here and look at these brick veneer cracks! That darn Arsenal is tearing our house apart!"
For the past 29 years, I've gotten one or two calls each year whereby people are contending that their brick veneer or drywall cracks were caused by the bomb detonations and rocket testing activities on the Arsenal. The City of Huntsville has long been monitoring the Arsenal blasting activities with seismograph instruments placed around the Arsenal boundaries. As far as I know, the levels of ground vibration recorded during this same time period have all been deemed safe.
But you won't convince the homeowners in South-Huntsville. They know better!
Actually, they're wrong. They are not feeling ground vibrations. They are feeling their house shake from what engineers call "air-blast" a fancy word for concussion or low-frequency sound waves.