Remember when prosecutor Robert McCulloch argued in his press conference that witnesses who change their story should not be considered credible? Well, turns out that Wilson's story has changed over time as well.
In volume 5 of the grand jury transcripts (dated September 16), the grand jury heard accounts from the Ferguson sergeant who spoke to Wilson right after the shooting, a St. Louis country detective who also interviewed Wilson right after the shooting, and an FBI agent who interviewed Wilson on August 29.
In his account to the sergeant, the sergeant recalled that Wilson claimed that only one shot went off in the car, when Wilson and Brown were grappling with each other. Also, there is this key quote on p. 58:
Question: "Has he ever told you, yeah, I didn't know anything about what happened up at the Ferguson Market?"
Sergeant: "Yes, he has told me that in subsequent conversations."
Question: "He [Wilson] told you he didn't know about there being a stealing at the Ferguson Market?"
Sergeant: "Correct."
The St. Louis county detective also had notes from his interview with Wilson. Again, Wilson only remembered one shot fired in the police car. The detective has this to say when Wilson was recounting why he attempted to stop Brown and Johnson:
Question: "At that point does he [Wilson] say that he investigates these two for stealing Cigarillos, does he mention anything to them about the theft."
Detective: "He doesn't say anything like that to me."
The detective also noted this detail about the struggle at the car with Brown:
Detective: [Wilson] "states that subject [Brown] reaches backwards with his left hand, and basically removes his left hand and arm from the vehicle and hands something to the other subject [Dorian Johnson] and says, 'here, take this,' is what Officer Wilson says that he hears the larger subject say. He did not, nor did I ask, describe what he thought was handed off, but he said that he handed something."
This is key, because Dorian Johnson, in his testimony, has stated that at that moment, Brown handed him the cigarillos. In this key hand-off, Wilson initially failed to mention that it was the cigarillos. The most logical reason why Wilson fails to mention this is because he did not know Brown had cigarillos and that was NOT the reason for stopping Brown and Johnson in the first place.
By the August 28th interview with the FBI, however, Wilson's story changes. He now claims that he reversed his police truck back towards Brown because his "attention was then drawn to Michael Brown and he noticed that Michael Brown's hand were full of Cigarillos," thus making a connection to the convenience store robbery. Wilson also recounts to the FBI agent that during the struggle with Brown at the car, Brown handed the Cigarillos to Johnson.
Wilson's story about the number of shots in the police truck also changes. He now remembers shooting twice. Here is his description of the second shot at the car, after a misfire:
Question: "So he said he blind racked the gun, which he described as being [sic] the slide back?"
FBI: "Yes."
...
Questioner: "Okay. So what does he say happens after he blind racks the gun?"
FBI: "He fired the gun again, he pulled the trigger again, the gun fired and he saw, and he wasn't looking where he was shooting he said, he saw a cloud of dust in the dirt across the street and assumed Michael Brown had not been hit because that's where he assumed the projectile landed."
Seems to me that it would be hard to forget that harried moment in the car when your gun misfired and you had to rerack your gun to try to fire again after seeing the "demon" expression in Brown's face. Yet that is what Wilson is asking us to believe.
The story Wilson recounts to the FBI is the same story he tells the grand jury on September 16. The changes in the story do seem to show why there were media reports in August saying that Wilson did not connect Brown to the robbery, and that the initial encounter was motivated simply over jaywalking. The sudden crystal clarity over the second shot at the car also seems extremely fishy. Perhaps that second shot was actually not taken inside the car.