gadget makers, scientists, and engineers from past and present. Hundreds of imaginative inventions used to steal secrets are displayed in this gallery. Making Sense of Secrets In the "Making Sense of Secrets" gallery, visitors learn how secret information gets turned into useful intelligence. The gallery's interactive exhibits inform how codes are made, analyzed, and broken. Covert Action In the "Covert Action" gallery, visitors discover the age-old techniques leaders use to secretly influence events abroad. They learn about covert mission failures and successes from sabotage to lethal action. Spying That Shaped History The "Spying that Shaped History" gallery illustrates the impact of intelligence on history. Visitors explore stories from the American Revolution to 21st century cyberwarfare and hear what intelligence officers think about on-screen spies. An Uncertain World The "An Uncertain World" gallery explores how spy agencies protect against threats at home. Visitors learn what can happen when they go too far and delve into spy tales from Renaissance Venice to Cold War Berlin. Debriefing Center Visitors receive the conclusion to their Undercover Mission in the Debriefing Center including a performance debrief that summarizes their top spy skills. Previous exhibits The museum had an interactive exhibit called Operation Spy where visitors assumed the roles of covert agents and participated in a one-hour Hollywood-style spy simulation. Visitors moved from area to area, interacting with puzzles, tasks, motion simulators, sound effects, and video messages to work through a mission to intercept a secret arms deal involving a nuclear trigger. In 2011, the museum had an interactive called Spy in the City where visitors were given a GPS-type device and had to find clues near various landmarks in the area surrounding the museum to obtain the password for a secret weapon. Notable Items in the Permanent Collection A Four Rotor Japanese Enigma Machine, built by Germany during World War II for its ally, Japan. The wreckage of Francis Gary Powers' U-2 plane. A 1922 Silver Dollar with Suicide Pin that was made by the CIA for the U-2 program. A Bay of Pigs flag. The 2506 Assault Brigade was meant to fly this flag as a symbol of victory following the 1961 invasion attempt. A vial of heavy water produced to commemorate WWII's Operation Gunnerside. A printing plate used in Operation Bernhard, an exercise by Nazi Germany to forge British bank notes. A coat with a buttonhole camera, created by the KGB. A c.1949