"Who watches the watchmen" is an old Latin phrase, sometimes
translated as "who guards the guards?" Given sufficient time I could
probably dig up the origin of the phrase; it's fairly common.
And thanks re: Ivanova...she's a hoot. (And btw, Claudia and I are
tentatively set to do a Horizons convention in England around Apilr or
(er, make that April or) May.