USAF Security Service 1960-1963. Ditty-bopped in the Philippines and Italy. Spent 33 more years as a civilian doing pretty much the same job.
I honestly don't know how you were able to last as long as you did in the field unless you spent most of your latter years in supervisory positions. I lost about 25% of my hearing after roughly three years of chasing dittys, but I also rode a one-of-a-kind position for about half that time.