FDNY firefighter Ronnie Gies, of Merrick, was killed on Sept. 11, 2001. Since then, his three sons have honored his legacy by becoming firefighters themselves. NewsdayTV's Virginia Huie reports. #longisland #longislandny #fdny Subscribe to our YouTube channel: bit.ly/3jLQjUN Subscribe to Newsday.com: newsday.com/socialoffer ~ FOLLOW US ON SOCIAL MEDIA ~ @newsday on Facebook, Instagram and Twitter. @newsday.tv on TikTok.