Clifton Truman Daniel, U.S. President Harry Truman's grandson, and his son plan to travel to Japan in June to interview and record atomic bomb survivors' stories in Hiroshima and Nagasaki.

As a former journalist, the senior Daniel described in an interview Thursday how the stories of survivors, called hibakusha, have captivated him, especially after visiting Japan with his family for the first time last year.

His son Wesley plans to work alongside him capturing the interviews on film.