You can do this kind of personal writing about any experience that you can have. Here are some questions to direct your reflections about military service:
What relationships with other members of your unit were most meaningful?
How did you change your attitude toward authority?
In what ways did your experiences make you more mature?
How does serving change the way you relate to people in your personal life?
What were the hardest parts of serving in the Airforce and how did you overcome them?
What advice would you give to someone else thinking about serving in the military?
What led you to want to serve in the Airforce and do you still feel that way?
What moment of your service are you most proud of?
What would you do differently if you could?