William Sladen

饰：Himself, doctor

William H. Carrick

饰：Himself, naturalist

Joseph Duff

饰：Himself, ultralight aircraft pilot

Gerard Thevenot

饰：Himself, ultralight aircraft designer

Geordie Lishman

饰：Himself

Frenchy Downey

饰：Himself

Roy Hughes

饰：Himself

Betty Hughes

饰：Herself

Kirk Goolsby

饰：Himself, biology student

Jim Compton

饰：Himself, retired crop-dusting pilot

David Woodhouse

饰：Himself, ultralight aircraft flyer

Bob Joyner

饰：Himself, biologist

Bill Lishman

Bill Lishman

饰：Himself, narrator

Carmen Lishman

饰：Herself