Photo of more shooters past the Triple Overpass en route to Parkland?

Hello all. I've been slowly getting back into researching the JFK assassination after a long discussion with a coworker about the Jack Lawrence angle.

Many years back, I recall seeing a black and white photo of the presidential limo driving to Parkland after the shooting, and what appeared to be armed figures on the rooftop of a building along the way. I remember the gist of it being that there were more shooters lined up past the TSBD if the assassination didn't succeed. Am I misremembering things or are there theories out there supporting this?

Thanks in advance

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u/223886 — 1 month ago