I hope this is acceptable, as it is not *directly* Blue related. However, it is interesting, and might provide comparisons with what happened earlier. From: https://www.russianspaceweb.com/n1_5l.html "In violation of procedures, Ivanchenko dropped his head set and rushed to the window in the hallway. He saw the fiery mushroom cloud silently rising over the launch pad. Instinctively, he jumped away from the window toward the door and a moment later a loud bang slammed the window open and pieces of glass showered the floor. At Site 115, apparently the closest point to the launch pad where personnel was allowed to stay, Menshikov and his soldiers and officers needed a few moments to fathom what had just happened. While they stood frozen and stunned, a giant red and black mushroom cloud erupted over the pad and steppe, and air around them started vibrating. "Lay down" Menshikov finally yelled and he jumped into the trench behind him.…