While talking about the score of the episode , composer McCreary noted the parallels between the firefighter victims " who went to New York to help people and ended up contracting an incurable illness that will kill them " and the plight of the first responders to the September 11 attacks . Kevin Garcia , while writing for the '' Observation Deck '' at io9 , noted that " Marvel does have a few significant firefighters . Most notably , although not well-remembered , are the heroes from '' Call of Duty '' " , who were themselves inspired by the real-world heroes who responded to the September 11 attacks
September 11 attacks
September 11 attacks
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