This photo was taken by Mark while at the Gettysburg investigation.  Mark was sitting in Triangular Field just after dark snapping photos.  Later on that night while at the hotel we were all looking at our photos and Mark brought our attention to this one.

He was fairly certain that there was no one near him at the time the photo was taken but did report that two people did walk by him and he greeted them as they walked by.

Later as we all went over the evidence while listening to the D.V.R. we were able to determine that Mark took three photos within twenty seconds prior to seeing and greeting the individuals walking down the path.