[Secret Service agents reenacting the assassination]

Original black and white photographic negative taken by an unidentified Dallas Times Herald staff photographer. This image shows the first Secret Service reenactment of the assassination of President Kennedy on the afternoon of November 27, 1963. A light-colored convertible representing the presidential limousine is approaching the triple underpass as it travels down Elm Street. One of the agents in the car holds a camera pointed back the way the car came