DAYTON, Ohio -- A new exhibit featuring the Air Force Office of Special Investigations opened at the National Museum of the U.S. Air Force here April 20. The exhibit highlights notable OSI tasks such as counterintelligence, responding to espionage and investigating terrorist attacks. A disguise kit, surveillance cameras, electronic listening devices and a wristwatch modified to act as a radio transmitter are some of the items used by OSI agents that are featured in the display. (U.S. Air Force photo by Jeff Fisher)