Mr. Specter. Would you elaborate just a bit more on how you ascertained that position from fixed points in the background of the movie?
Mr. Shaneyfelt. Yes; we took a frame of the motion picture that is close to the beginning and a picture that is close to the end, and made a still photograph of those. We then establish a position and try to line up the relationship of objects close to where we are standing with objects in the background, so that they are in relation to each other as they are in the picture.
Then we take the other picture from farther along the motion picture film, and do the same thing, and where those two lines intersect is where she had to be standing.
Mr. Specter. You draw two straight lines through two objects that you line up on each of those pictures, and the intersection point of those two lines is the calculated position of the camera.
Mr. Shaneyfelt. That is correct.
Mr. Specter. And was that same system used to ascertain the position of Mr. Nix?
Mr. Shaneyfelt. That is correct.
Mr. Specter. And how did you ascertain the position of Mr. Zapruder?
Mr. Shaneyfelt. Mr. Zapruder's position was known, as he was on the top of the abutment along Elm Street—he stated that he was standing on the abutment. And there is relatively no room to move around there, other than to stand there. It is about 2 feet wide by 3 to 4 feet deep.
(At this point, Representative Ford entered the hearing room.)