"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)."