Am I correct in assuming that you have made these determinations about the degree of the angle of the trajectory of the bullet at the time the President was struck, locating the position of the President in the car on the one hand, and the location of the rifle at the time the shots were fired? Mr. SHANEYFELT. The location of the wound, you mean the angle of the wound? Senator COOPER. Yes. Mr. SHANEYFELT. The angle---- Senator COOPER. You had to establish the position of the President at the time the bullet struck him and the position of the rifle to make a determination about the degree of the angle of the direction? Mr. SHANEYFELT. That is correct. The positions in the car, their positions in the car, were based on the Zapruder film. Senator COOPER. And you were able to determine what you think very accurately the position of the President in the car by the films that you have examined? Mr. SHANEYFELT. Yes. Senator COOPER. Then the factor then, which is not determinate, exactly, then is the location of the rifle, is that correct? Mr. SHANEYFELT. That is correct. Senator COOPER. Upon what did you determine the location of the rifle--upon what factors? Mr. SHANEYFELT. The rifle was positioned in the sixth floor window of the Book Building where the cartridges were found, and was determined from information furnished by representatives of the Commission. Senator COOPER. Did you have information about the location of certain boxes that were seen--were found--at the window after the shooting occurred? Mr. SHANEYFELT. That is correct. Yes; we had photographs of the boxes and we were advised, of the approximate position in the window and how far down the window was, the fact that some observers noted the rifle sticking out the window. Senator COOPER. I want to ask you--you did have information from the testimony of witnesses who said they saw the rifle protruding from the window? Mr. SHANEYFELT. We had this information furnished to us by the Commission. Senator COOPER. And those facts, those locations were made known to you, and upon that evidence did you locate the rifle, in making these calculations? Mr. SHANEYFELT. That was the basis for the location of the rifle in all of our calculations. Senator COOPER. Just one other question. Assuming that there might have been some variation in the location of the rifle, length of the window, the breadth of the window, or that the rifle you used was held higher than the rifle might have been, would it have made--how much variation would it have made, in your judgement, in these calculations you made? Mr. SHANEYFELT. I don't believe that any movement of the rifle in that specific window would alter our calculations to any appreciable degree if you stay within that window, because our reenactment and our repositioning of the bodies in the car based on the photographs is subject to some variation, too, so we have variations throughout.