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The tools, depending on the test level, range from simple hand held screwdrivers, through a variety of power tools, all the way up to oxyacetylene cutting equipment, pneumatic impact tools, concrete chainsaws and high powered diamond drills.
They weren't QUITE supersonic. They were doing an estimated 590kts at the time of the pass
Testing stops just short of using vehicles, firearms and explosives.
The strongest shockwave ever recorded was an F-4 at 100 feet, and it was over 144lbs per square foot. That wasn't enough to cause injuries to the scientists, but that would cause damage to just about any building made.