I've flown ZRH-JFK a lot. Even though I'm in GE, once my bp had SSSS = extra inspection at the gate; there was a list of about 20 names all "randomly" SSSSd [for intl to USA on US carriers, this is done by DHS].
PS: all my bps (except the one noted) from ZRH-JFK note TSA PRECHECK..a meaningless concept out of ZRH.