I've flown SFO-IST in J at least 6 times in the past 3 months and never got a SSSS.

However, when I was asked stupid questions by AA security at LHR, the silly Indian b1#@h changed my TSA Precheck boarding pass into a SSSS, although I was flying in J and am an AA ExecPlat. The security guy at the gate who I was asigned to for an additional check, also an Indian, was a gem however and whisked me through in less than a minute.

Yet another reason to fly TK rather than UA, AA et al