AdvertisementCould Brain Surgery Save A Father And Son?07:14Download AudioResumeDecember 24, 2017Michael MayfacebookEmailCarl Luepker, his son Liam, 12, and daughter Lucia, 11, light the menorah during Hanukkah in their home in Minneapolis, Minn. Carl and Liam both have a degenerative nerve disorder called dystonia. (Jenn Ackerman for NPR)