Some lone-gunman theorists will assert that Oswald's alleged shooting performance was duplicated by several expert marksmen in the CBS rifle test. However, the CBS test did not simulate all of the factors under which Oswald allegedly fired. Furthermore, the four riflemen who managed to score at least two hits out of three shots in less than six seconds failed to do so on their first attempts, yet Oswald would have had ONLY one attempt. And, needless to say, all of these men were experienced, expert riflemen. Seven of the eleven CBS shooters failed to score at least two hits on ANY of their attempts. The best shot in the group, Howard Donahue, took THREE attempts to score at least two hits out of three shots in under six seconds. In addition, the CBS shooters did not use the alleged murder weapon, with its difficult bolt and odd trigger--they used a different Carcano.
The impossibility of Oswald's alleged shooting feat was what led former Marine sniper Craig Roberts to reject the lone-gunman theory. Roberts explains as he recounts the first time he visited the sixth floor of the Texas School Book Depository:
I turned my attention to the window in the southeast corner--the infamous Sniper's Nest. . . . I immediately felt like I had been hit with a sledge hammer. The word that came to mind at what I saw as I looked down through the window to Elm Street and the kill zone was: IMPOSSIBLE!
I knew instantly that Oswald could not have done it. . . . The reason I knew that Oswald could not have done it, was that *I* could not have done it. (KILL ZONE: A SNIPER LOOKS AT DEALEY PLAZA, p. 5)
Retired Gunnery Sergeant Carlos Hathcock is likewise skeptical of Oswald's alleged shooting feat. Hathcock is a former senior instructor at the U. S. Marine Corps Sniper Instruction School at Quantico, Virginia. He has been described as the most famous American military sniper in history. In Vietnam he was credited with 93 confirmed kills. He now conducts police SWAT team sniper schools across the country. Craig Roberts asked Hathcock about the marksmanship feat attributed to Oswald by the Warren Commission. Hathcock answered that he did not believe Oswald could have done what the Commission said he did. Added Hathcock,
Let me tell you what we did at Quantico. We reconstructed the whole thing: the angle, the range, the moving target, the time limit, the obstacles, everything. I don't know how many times we tried it, but we couldn't duplicate what the Warren Commission said Oswald did. (KILL ZONE, pp. 89-90)