Sunjata's Trooferism In NY Times Article

Nothing much to it; they kind of treat it like "Isn't this interesting?"

Sept. 11 has been a touchstone for the series, which is set in a New York City firehouse. Denis Leary, who plays the lead character, said Mr. Sunjata’s character creates a rift among the fictional firefighters. Similar scenes have played out in actual firehouses in New York, he said, “where some of the younger members don’t even have to completely buy into the theory of 9/11 being an inside job, but want to discuss it.”

Personally, I doubt that a lot of the younger members want to discuss it.