President John F. Kennedy had an affair with a 19-year-old intern who traveled with him on official trips, according to a new biography of Kennedy.
"She had no skills. She could answer the phone," Robert Dallek, author of "An Unfinished Life," told "Dateline NBC" in an interview that aired Sunday. "Apparently, her only skill was to provide sexual release for JFK on those trips and maybe in the White House."