Frank Lucien Hale once accompanied a famous American aviator nicknamed Slim, Lucky Lindy, and The Lone Eagle on what?
Frank Lucien Hale:  He later accompanied Charles Lindbergh in a transcontinental flight. Charles Lindbergh: Charles Augustus Lindbergh (February 4, 1902 – August 26, 1974), nicknamed Slim, Lucky Lindy, and The Lone Eagle, was an American aviator, military officer, author, inventor, explorer, and environmental activist.
a transcontinental flight