Please don't force yourself to do anything until you are ready. You need time to process your experience and identify what is most triggering for you. It doesn't mean force yourself into exposure so you can "get over it". In time that will come, you will notice that you can do little things you couldn't before. I was severely abused and for years whenever I would even imagine the trip back to that state when I was about 45 minutes from where I grew up I would panic. I would see the river and be flooded with fear. I can make those trips now and I know it's a memory. I was also able to find happy memories in the surrounding towns. All of this I say to tell you it takes time and processing. Repeating your story a million times from different angles and getting new perceptions. If you feel like you can watch the show and think about the talent and the craft etc, do so. If you are going to be traumatized than get away from it. You are healing and what you went through is very horrible. It's okay to take time and heal at your own pace in your own way. I wish you peace especially on this air show day.