What better cover for a government spy than to claim retirement and run a museum? E. Peter Earnest, a 36-year veteran of the Central Intelligence Agency, couldn't think of one, so he teamed up with the International Spy Museum, which opened in Washington, D.C., in July. Visitors adopt a cover, go to spy school, break codes, identify operatives, fall under covert surveillance, and learn about the lives of secret agents. The museum also boasts the largest collection of spy gadgets ever assembled for public display-more than 600 in all. Here's a sampling of the more intriguing curios.