Themes The history of the African American unit of pilots in World War II. How were African Americans treated in the 1940s? How does racism affect people today? What does it take to become a pilot? What makes someone a hero? Who are some of your heroes? Red Rhino Books Nonfiction is the first Hi-Lo children's nonfiction series at a first-grade reading level for students in grades 4-7. Visually appealing fullcolor photographs and illustrations--along with fun fact boxes--keep these books flowing. Also includes prereading comprehension questions along with a 20-word glossary for further reading support.