I also have a cookie bit hearing loss, and my hearing is getting worse over time. I was told that more than likely my loss was due to being around jet aircraft, and flying in the cargo bay of the old c141s. Also there are the fans from the equipment bays of the transmitters and receivers that I was in charge of. And oh yes the shooting of the weapons, I did as a child and ever since. So this is not a lecture, just what I was given as the whys for my hearing loss.
Also think you so much for your service.