Quale tipo di esplosione (proveniente dall'interno o dall'esterno dell'edificio) č compatibile con i danni visibili davanti alla facciata?
According to Pentagon renovation manager Lee Evey, about 80 percent of the Wedge One workers had returned to their offices. That sector of the building, therefore, potentially housed about 3500 workers that day. What saved so many lives, indisputably, is the structural stiffening Wedge One had undergone as part of a much needed, nearly completed, upgrade. The exterior walls had been reinforced with steel beams and columns, bolted where they met at each floor. Some of these reinforced walls very near the point of impact remained in place for a half hour before collapsing, allowing uncounted hundreds to escape.
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