I’d like to know, too. My tinnitus developed a couple years ago, decades after my service, but vet friends told me it’s not uncommon. I spent a lot of time around jet engines, and I also spent a lot of time in the turret of a LAV with high frequency turret hydraulic noise, and a big chaingun going off next to my right ear. Docs could measure only a very slight hearing loss though, and nothing could be found on exams. Even got a MRI on my skull, I’m clear. How would hearing aids potentially help?