“Since so much of todayâs counterterrorism war is cloaked in secrecy, Clark faced a challenge in creating works about the goings-on at military prisons like the one at Guantánamo Bay and the CIAâs now-shuttered âblack sitesâ for interrogations or âextraordinary renditionsâ â not to mention the detention centers hosted by foreign countries. At times, he arrived at some rather conceptual ways to present the few visuals available.”