(EN) Fischbach, Amy Florence, "Towering security", su september11.ceenews.com, CEE News, 1º gennaio 2001. URL consultato l'8 marzo 2007 (archiviato dall'url originale il 21 ottobre 2006).
«E-J Electric set four generators on the roof of Tower 5, which was nine stories, as opposed to the 110-story Towers 1 and 2. E-J then ran high-voltage feeder cable to Towers 1, 2, 4 and 5, installed three substations and distributed power to the tenants.»