The public is invited to a free lecture presented by Maj. Gen. (ret.) Mark Musick about his book “Boxes: The Secret Life of Howard Hughes.” The lecture is set for 10:30 a.m. Sept. 14 at the Champaign Aviation Museum, located at Grimes Field in Urbana. The story tells of a faked death, a government-provided identity and the secret life Hughes reportedly led from his alleged death in 1976 until his death in 2001.