Static test became a dynamic test. Bad look for sure, flight was most definitely not terminated intentionally and the rocket, still full of fuel, crashed back down to earth after multiple engine failures and exploded. This happened in a relatively populated area and there the resulting overpressure definitely at least broke some windows in a relatively dense metro.
[dupe]<p>Some more discussion: <a href="https://news.ycombinator.com/item?id=40837229">https://news.ycombinator.com/item?id=40837229</a>