Share 'So lost and dont know what to do.'

I am not sure how this is all done. I have a problem. My son has been in a very bad motorcycle accident. He is in bad condition. My son has always told me that there is a POA and will. He was very bad about mailing things to me. I am trying to find out if the Navy keeps that information. If they do where ans who would I contact. How can I contact to find out. He is in Norfolk and I am in Washin...