City on Fire

Shell Oil, which owned a $600-million refinery that the production wanted to use as a location, granted permission as a gesture of raising awareness about safety issues (the dangers of locating oil refineries near cities).

Although set in an unnamed American city (identifiable because of the appearance of USA flags in a few scenes), the television station setting for the movie has the call letters listed as CFTM-TV. In the United States, all television and radio station call letters begin with either the letter K (for states west of the Mississippi River), or the letter W (for states east of the Mississippi River). The letter C is used for all of Canada's provinces.

Edited from Bullitt (1968)