in the hours after lincoln is shot, the surgeon general, joseph barnes, responds to the president's sidethis is at the peterson house directly across the street from the theater. he calls for a probe and mounted that in the back here on display. the idea with the probe is it would be threaded into the wound with the idea depending how far into the wound the probe would go might identify where the fragment or bullet was. they weren't able to do so. the bullet, they found later, ended up being lodged behind lincoln's right eye. but the probe is part of the exhibit we have here on display. the surgeon general barnes and army medical museum staff john woodward and another surgeon named edward curtis were at the president's bedside in the hours before he died, which was 7:22 the next morning, april 15, 1865. it was decided that a post mortem would be performed and the president's body was moved to the white house and the autopsy was performed in a room that is today one of the president's dining rooms in the second floor of the residence. it is during that autopsy that the bullet is recovered