Keiva, I imagine you, and most others here, have seen on TV a controlled demolition, where a building is imploded by explosives to bring it down. Baltimore is the home of the oldest and most used company which does this work, and they do many locally. It's done by placing explosive charges (which need not be very large or powerful) at the main support piers of a building and then setting them off by radio signal. The building collapses in on itself, being deprived of its support. I have seen a number of such demolitions locally and what happed today was just like it. The structural engineers' explanations may be correct, but one certainly wonders.