Makayla L. Tyler, coauthor and illustrator, is a nine-year-old student. Coauthor Cheryl K. Greer is a retired Air Force and a retired AFJROTC instructor and Makayla’s grandmother.Makayla L. Tyler, coauthor and illustrator, is a nine-year-old student. Coauthor Cheryl K. Greer is a retired Air Force and a retired AFJROTC instructor and Makayla’s grandmother.