You can't request a waiver, but you CAN gather medical records. And you can go ahead and submit items to your DODMERB medical record which will be available to the service academies. USAFA might request specific information from you if they are interested in you, but you can submit on your own as well. For example, if you have been tested and have results that show you no longer have a reaction to shellfish, that would be worth submitting. For your back, you could get evaluated by a specialist and perhaps have them write a letter indicating that you healed completely and that the previous injury would have no lasting effects and would not impact your ability to serve or to deploy. Keep in mind, if they request information from you through DODMERB, then you would go to a doctor they approve and would not have to pay. If you go on your own, then you'd have to pay out of pocket. We took our daughter and paid out of pocket to make sure the information we knew was the most relevant would already be in her records when the Academy (USCGA in her case) took a look at her file.