He started working in Afghanistan while I was still the commander, and I believe he translated for me once. I wasn't comfortable with him, so I went back to another individual. If I had known he was preaching in the mosque, I would have put an end to it, because I don't believe that would be appropriate to do.
My recollection of 99% of the interpreters, translators, is that they are very dedicated to the job they do in Afghanistan, but they do keep a low profile.