(27.02.2013) 1. GREYSTONE, or GST. GREYSTONE, all in caps, was what the CIA used to control information about its post-9/11 extraordinary rendition and enhanced interrogation technique programs. GST is the trigraph that‘s blacked out on many documents that the government has released through the Freedom of Information Act and other lawsuits. The term „GST“ was revealed to the world by Dana Priest, but the government confirmed it accidentally, as I reported in 2009. The GST program was heavily compartmentalized. The torture part was kept separate from the travel part, for example, which is standard government practice. We still deal with the ramifications of this program today. Its legacy haunts our diplomacy, provides endless debates about our values and principles, and is still an open wound within the CIA.