(which he said extended to the region of the femur) could have been made by a bullet travelling at high speed striking the thigh on an angle. The HSCA concluded, however, that Connally was not seated in the middle of his seat but was about to the left of that position. NASA Engineer Thomas Canning provided an analysis of the photograph taken by Hugh Betzner from the rear of the limousine a moment prior to the first shot (according to Betzner, he took the picture and began winding his camera to take another when the first shot sounded). It has been determined that Betzner's photograph was simultaneous with Zapruder frame 186. Canning could not see Connally's shoulder in Betzner's photograph and concluded that this meant that the shoulder was obscured by the person standing in front of Betzner. This, he said, put the shoulder well to the left of Kennedy's midline putting his right armpit in line with a right-to-left path through his neck. The analysis and conclusion of Canning depends on the correctness of the assumption that Connally's shoulder would have been visible if the man in front of Betzner was not there. The photo taken by James Altgens taken from a similar angle earlier on Houston Street would seem to indicate that Connally's shoulder was below the line of sight. Chain of evidence Some critics have questioned the circumstances surrounding the bullet's discovery at Parkland Hospital. In a 1966 interview with author Josiah Thompson, one of the men who found the bullet, Parkland personnel director O.P. Wright, cast doubt on whether the bullet subsequently entered into evidence as CE 399 was the same bullet he held in his hand that day. Wright told Thompson that the bullet they found was point nosed, whereas CE 399 is round nosed. However, in 1964, both Wright and Darrel Tomlinson, a maintenance employee at Parkland who passed the bullet along to Wright, were shown the bullet and said the bullet in evidence appeared to be the same one as the bullet found on the stretcher, though neither could positively identify the bullet as the same one. See also James Tague, a witness to the assassination, who was wounded from a concrete curb chip List of conspiracy theories References External links Zapruder film footage, including individual frames referenced in this article – This is the "Costalla combined edit", hosted at a site which