Video: '911: WTC Withstood Several Hours of Fire in 1975'

(Thursday, February 13, 1975, just before midnight EST) — A three-alarm fire deliberately set by a disgruntled custodian broke out tonight in the 11th-floor offices of the B.F. Goodrich Company in the north tower of the World Trade Center, and spread through an inner-service core to the ninth and 14th floors but caused no direct casualties.