Filmmaker John Moore, who directed "Behind Enemy Lines" and last year's "Flight of the Phoenix," is still on track to direct a biopic about the life of the first man to break the sound barrier, according to FilmFocus. While "The Last Mission" might be Moore's next project, the website said, the Irish-born director is still feverishly working on the biopic which was originally intended for release last year. Richard Zanuck is attached to produce.