Cheryl Cage began Cage Consulting, Inc., in 1988 (which became Cage Marshall Consulting in 2010). Hundreds-of-thousands of pilots have used the interview preparation and career planning products and services of Cage Marshall Consulting. Cheryl is the author of five aviation career books including the best-selling Checklist for Success: A Pilot's Guide to the Successful Airline Interview (over 150,000 copies sold). In addition to her work with individual clients, Cheryl served as an independent consultant for many corporate clients such as Embry-Riddle Aeronautical University, Northwest Airlines, and unions including the Air Line Pilots Association (ALPA).