8:46 amFirst plane hits the North Tower of the WTC. Within Minutes officials coordinate the city wide emergency response. Housing the command center was the 23rd floor of WTC Building 7.
NoonFloors 7-9 and 11-13 burned out of control. One issue with this building was that the sprinkler system required manual initiation of the electrical fire pumps, rather than being a fully automatic system. This caused a huge hinder, due to the water pressure, in extinguishing the fires. During this time the firefighters heard creaking sounds coming from inside of the building.
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