Turner's statement given to the DPD on December 18th, 1963 was mostly about where he and his co-workers were standing in the basement and about how they had set up the cameras. Regarding the actual shooting all that it had to say was:
"Mr. Turner stated he saw Jack Ruby just a split second before the shot was fired. He did not know Ruby prior to the shooting and - DOES NOT RECALL SEEING THIS MAN IN THE BASEMENT".
If the witness had actually been in the basement, their reports included whether they had seen Ruby or the shooter in the basement beforehand and included how he might have got in. That was key to their investigation.
That's it, nothing more about shooting or shooter was in Turner's report.
On March 25, 1964 his WC testimony changed to that he saw a distinctive looking man actually walk down the Main Street ramp before the shooting. He gave long and detailed testimony about how he didn't keep his eye on that man because a colleague asked him a question. But some 15-30 seconds he recalls seeing him again standing in a line of cops and a few reporters. He said the man was only there for 4-5 seconds before LHO was escorted out and shot.
I am seeing this repeatedly in the police reports; that the original claim doesn't match what they testify to. It's insane!
I am reminded of what Tip O'Neill wrote in his memoir, Man of the House. He said that Ken O'Donnell, who rode in the Secret Service car right behind JFK, and who was a personal aide of JFK, one of his Harvard buddies, one of the so-called "Irish Mafia", told him confidentially that what he told the Warren Commission was a lie. He told them that he thought the shots came from the Depository, when actually, he thought they came from the Grassy Knoll. And, he said that the FBI told him to say that, saying that it would be helpful, and would ultimately ease the strain on the Kennedy family if everything got wrapped up as quickly as possible. This is exact excerpt from the book. Even though he remembered O'Donnell saying that "he" didn't want to stir up more pain for the family, you can be damn sure the FBI planted that idea in his head.