This new presumptive Bronson film 12:15 time stamp for the box on ledge is causing a bigger problem logically , especially if Oswald is the presumptive shooter.
The SM prepared late just after BRW left by 12:23:30 , by a shooter who had decided to change his original SW window position to the SE window after having been surprised at the presence of BRW at 12:15, is the more plausible theory imo. It works best with some other person than Oswald as the shooter, however.
Otherwise, it’s a situation where if the shooter is Oswald, he had already prepared the SN just before BRW was on the 6th floor and then Oswald had left the 6th floor to go down to ground floor to speak to Piper at 12:00
Then Oswald would have to be seen by Carolyn Arnold about 12:12 rather than 12:15 in the 2nd floor lunchroom. ( Thus is not likely because all the women, including Mrs Reid had not yet left the lunchroom. )
Then Oswald would go back up the staircase to the 6th floor landing and grab a rifle from a hiding place nearby, and he would decide to abandon running over to the prepared SN , choosing the SW unprepared window instead.
Getting as close to within 3-5ft of a fully open SW window holding the rifle at the ready , suggests possibly the shooter had mistaken the noise of the siren of the 12:15 ambulance (for the epileptic man) as heralding the arrival of the JFK motorcade to Dealey plaza.
The shooter then realized his mistake upon being able to have LOS to the ground level of Dealey plaza, and so he backed away from SW window.
Now this shooter could have then just walked right down that 3ft wide corridor along the South facing wall to go directly to the prepared SW window, however he apparently did not otherwise he would surely have seen and be seen by BRW supposedly sitting low to floor on the cart.
possibilities:
1. The shooter thought it more stealthy to go back to the staircase than via past the rear elevators to get to the SW window
2. The shooter , after making his impulsive move to the SW window on the mistaken siren noise stimulus, also saw or heard BRW upon getting to within 3-5 ft from the SW window, therefore knew he couldn’t go directly to the SN.
3. The shooter did not wish to have to break apart some of the stacked west side wall of boxes to enter the SN.
In any case , Carolyn Arnold’s FBI report of sighting Oswald at 12:25 on the ground floor , front entrance lobby of TSBD would make it an impossible feat for the shooter to be Oswald.
And Oswald coincidentally describing Norman and Jarman out of all the employees he might have named , suggests Oswald was also in the Domino room around 12:25-26 and saw N/J returning.
So although I’m willing to discard Arnold Rowlands later statements of an elderly negro leaning out the SN at 12:15, while retaining his earliest affidavit statement of sighting the Latin/white man at the SW window at 12:15, the probability is very low that the person holding the 30.06 hunting rifle with large scope , was Oswald holding an MC rifle.
