As I recall, on the slope above the kever, at the Yahrzeits of both Kahanes, there are always 3 or 4 obvious Shabak agents with videos and dark glasses and smirky grins recording the attenders. And this apart from the informers with knitted kippot and big beards within our own ranks. Shmuel Sackett addressed the February 199 Jerusalem Kahane Chai meet with "and a particularly warm welcome to the GSS members in the audience!". Immediately after his address, BZK had to flee the hall to avoid arrest.