HOLLYWOOD — Fire trucks lined Sunset Boulevard outside the DGA building Tuesday night, but there was no fire.Instead, some 200 firefighters from several cities, in full regalia, celebrated the premiere of “Into the Fire,” a documentary by Oscar winner Bill Couturie heralding the work of firefighters nationwide. The gala included a tribute from bagpipers and was hosted by thesp Chris O’Donnell and Chuck Kavitsky, CEO of the Fireman’s Fund, which co-produced the doc. Introducing the film, Couturie noted: “They are like every great hero. They don’t consider themselves heroes. They feel like they are ordinary people who are put in extraordinary circumstances.” Doc premieres Oct. 13 on the History Channel.