TINKER AIR FORCE BASE, Okla. (AFPN) -- Marilyn Petricek and her daughter, Savanna, are videotaped before going to Chicago to be on "The Oprah Winfrey show" on May 9. The two were invited to be guests on a Mother's Day-themed show after Savanna wrote a letter about how her foster mother, "her angel," adopted her. (U.S. Air Force photo by Eddie Edge)