News Sunnyside businesses destroyed by fire: See photos Updated December 13, 2018 2:01 PM Print Share fbShare Tweet Email A 5-alarm fire destroyed six businesses Thursday morning on Queens Boulevard in Sunnyside. As firefighters were working to put out the blaze, the roof of the commercial strip collapsed, likely because of a backdraft, Assistant Chief Anthony De Vita said. “With the amount of fire and heat and with the right amount of fuel and oxygen, sometimes you have a smoke explosion, a backdraft which is basically an instantaneous ignition of smoke and heat and gases,” he said. Scroll down to see photos from the scene. Photo Credit: Charles Eckert A gutted storefront on Queens Boulevard in Sunnyside, Queens, on Thursday. Photo Credit: Charles Eckert Firefighters respond to a multiple-alarm fire in a strip of commercial buildings on Queens Boulevard in Sunnyside, Queens, Thursday, Dec. 13, 2018. Share on Facebook Share on Twitter Comments We're revamping our Comments section. Learn more and share your input.