http://en.wikipedia.org/wiki/Cone_of_Silence" onclick="window.open(this.href);return false;

I wonder if "Get Smart" got it from Dune?
Moderators: Freakzilla, ᴶᵛᵀᴬ, Omphalos
thanks that was instructingtrang wrote:yep, 10 years in USMC aviation, Navigational aids have it, mostly really old NDB's when the pilots meter goes from "to" to "from". TACAN's (compass radials emitted, but over the NAVAID gets the cone)have it to a lessor degree across country. Sometimes also referred to as the Cone of confusion.