VIDEO: Watching a boy who's become a good friend deliver a thank you speech left Rhinelander Fire Chief Terry Williams struggling to find his own words on Tuesday afternoon. "It's pretty tough," Williams said, pausing to compose himself. "It means a lot." Isaac King stood in the fire house that's become like a second home to him with a message and a gift: 20 particle barrier hoods -- one for each firefighter -- which go under a helmet and protect firefighters from cancer-causing materials while on the job. The RFD has similar hoods, but none to this quality. "Oh, that's a big deal," Williams said of the hoods. "I mean, every step that we can take to prevent cancer is huge." The 8-year-old knows a thing or two about cancer. He fought leukemia for 3 1/2 years. Isaac wants to be a firefighter, so he spent many days learning and befriending the crew.