We're just days away from Diane Sawyer's interview with Bruce Jenner. The Olympian is expected to address his rumored gender transition, but in the latest preview clip, his focus is all on his family. Airing this Friday, the interview touches upon Jenner's role as a parent. The 65-year-old reality star is father to six children from three different relationships: Burt, Casey, Brandon, Brody, Kendall, and Kylie. Of course, Jenner is also the longtime stepfather to Kourtney, Kim, and Khloe Kardashian. A just-released promo clip shows Jenner telling Sawyer that his children are "the only ones I'm concerned with." "I can't let myself hurt them," he added. The clip includes footage of Burt, Casey, Brandon, and Brody, who will presumably appear to show support for their father. Kendall, Kylie, and the Kardashian sisters aren't there, but there is a shot of a recent Instagram photo Jenner took with his girls. Stay tuned as more clips are revealed. You know where to find us Friday.