Sam Kinney driver of the follow up car heard the same as bowers Pow.........Pow...Pow

Why would you believe Arnold made a mental note of what time she saw Oswald? Nothing would have seemed less important at the time. She wasn't sure where or when she had seen Oswald. Why would she have been?

I tried working out a plausible solution but it requires that Oswald’s original plan was to shoot from the window at 12:15, that he transported the rifle multiple times in the bag ( yet only 2 prints on bag?) that he got spooked seeing BRW at the other SE window, that Oswald hid the rifle in bag again, went all the way down to 2nd floor lunchroom to be seen maybe at 12:17 by Carolyn Arnold , then a few minutes later , Oswald regained his nerve and went back up , took rifle in bag to NW corner , saw BRW still at the SE window. Then Oswald hid somewhere to hide until  BRW finally left 6th floor  at 12:23 using the elevator. Then Oswald has only about 2 minutes to arrange those 3 boxes , placing one on  the window ledge at that particular Angle ( he had to get the box on the window ledge before film started)  And he did all that without being heard by Harold Norman on the 5th floor room right beneath him. (Norman and Jarman were at their windows by 12:23)  And Dougherty neither saw  nor heard ANY of this activity. 

I think it is clear beyond any reasonable doubt that Humes was deliberately misrepresenting the back wound's location in his CE 385 SBT diagram. He surely knew this was not even close to what he had seen. If you compare the autopsy photo of the back wound with CE 385, it is obvious that Humes mislocated the wound at least 2.5 inches higher than where the photo shows it.

The evidence that the back wound was clearly below the throat wound is truly extensive and impressive. For example: