Arnold Rowlands description of the SW window gunman wearing a “white or “light blue shirt with a collar”, (= SOLID rather that pattern color)) is not consistent with either just a white T shirt only or if Oswald was wearing the reddish brown shirt with it.
Rowland also leaves the choice of Latin or White to describe the complexion of the man.
Since I have ruled out Oswald as the gunman, then my choice of whom the SW window gunman might have been is one of 2 Cuban ex BOP / former Alpha 66 members ( a group that for some reason has an Oswald looking guy in one photo with some of them) .
A 2nd gunman might have been a mafia guy whom was seen in the Daltex building , 3rd floor , carrying a briefcase on that floor several minutes before the JFK limo arrived. He had no alibi and had an arrest record which required him to meet his parole officer at the time, but which meeting was not corroborated by the parole officer.
This option of 2 gunman because of John Martino’s alleged death bed confession ( per his wife’s account) that he was part of a conspiracy to hire 2 gunman for $50k
An Alpha 66 member + a Mafia member
Angry BOP survivor meets Angry Mob contractor in Miami Fl. ( coincidentally where 1st plan to assassinate JFK failed , followed by 2nd attempt in Chicago , foiled by preempting one Thomas Arthur Vallee, another ex USMC combat veteran trained as a rifleman and of similar 5’9” lightweight body type as Oswald !?)
Coincidences much?
The coincidence of Loran Hall and William Seymour ( 2 ex BOP CIA assets) having statement of visiting an apartment and the Sylvia Odio statement of having seen Oswald in her apartment in the company of 2 “Mexicans” , she being a member of an anti Castro political group that FBI man Guy Banister in New Orleans was keeping an eye on, whilst at the same time Oswald has an adjacent office to Banister, (with connecting door no less)…um..
About the Oswald similar looking guy in the Alpha 66 photo: I hesitate to say the man IS Oswald because he has the same oddly larger nose as that one photo of Oswald in the collage collection of all Oswald photos together, ie: The SINGULARLY ANOMALOUS fat nosed Oswald.
I’m sorry I’m unable to post images, but I’m certain many of the forum members here know exactly the photos or can find them and post them to support or refute the above hypothetical connection of persons.
And how this relates to the thread topic of When the SN was built, is that it follows from the question of why there was a gunman seen by Rowland at the SW window at 12:15 and only for a few seconds, and that the gunman was probably NOT an employee of TSBD. Rowlands “Latin” man with a light blue collar shirt coincides with images of Loran Hall, William Seymour wearing light solid color shirts with collars.
This is NOT , however any declaration that Hall or Seymour did the job, but to illustrate the coincidences here that point to the Alpha 66 group of which both of them allegedly were members. Hall actually has WC testimony implying that there was some attempt to recruit him for the job but he declined.
The SW window gunman seems to have not been familiar with where some employees were going at 12:00 and erroneously presumed the 6th floor would be clear. The gunman arrived perhaps dressed like one of the floor laying crew (light blue shirt w/collar?) that had been contracted by Truly, only this particular “contractor” had other mission to accomplish. Which he was planning to do as a quick 1shot kill from SW 6th floor window, then scoot, beginning his entrance into TSBD taking advantage possibly of the ambulance distraction.
Thus being thwarted by presence of BRW, this (hypothetical) professional Alpha 66 gunman ADAPTED and STAYED on the 6th floor waiting for BRW to leave and as BRW left by 12:24, it fits the timeline of Box In the SE Window in the Bronson film at 12:25 but NOT a box in the window any earlier than that, otherwise Arnold Rowland would have likely seen that detail at 12:15.
And Oswald seen by Carolyn Arnold 12:15-12:17 SEATED in the 2nd floor lunchroom is fair support for the idea of Oswald NOT having been the SW gunman because there’s no way he would know when exactly to go back up, not knowing if BRW has left the floor, nor knowing when /if the JFK had arrived.