Why Dallas?

[Jon Banks]

It was perfect.
The cops were crooked...hated Kennedy...so did the mayor, big business men like Muchinson and Hunt...Dealey Plaza was ideal-under complete control by the authorities. A little big city then and very vunerable.

The Mayor of Dallas at the time worked for the CIA

https://whowhatwhy.org/2017/08/02/dallas-mayor-jfk-assassination-cia-asset/

David Atlee Phillips was from Ft Worth
https://www.mcclatchydc.com/news/nation-world/national/article183786081.html

[Nicholas Turner]

The Mayor of Dallas at the time worked for the CIA.

What did he do for them?

[Steve M. Galbraith]

The Mayor of Dallas at the time worked for the CIA

https://whowhatwhy.org/2017/08/02/dallas-mayor-jfk-assassination-cia-asset/

David Atlee Phillips was from Ft Worth
https://www.mcclatchydc.com/news/nation-world/national/article183786081.html

Where does it say in these documents he "worked" for them?

A standard secrecy agreement? And a 201 file which has personal information about a person of interest? Which are generated for a variety of reasons: Oswald had one. Nothing in either about him "working" for them.

[Jerry Freeman]

What did he do for them?

https://en.wikipedia.org/wiki/Asset_(intelligence)
Cabell owned a chain of minute marts.
His brother was Gen Chas Cabell  Deputy Director of the Central Intelligence Agency (1953?1962). ..fired by Kennedy.
https://en.wikipedia.org/wiki/Charles_P._Cabell

[Nicholas Turner]

https://en.wikipedia.org/wiki/Asset_(intelligence)
Cabell owned a chain of minute marts.
His brother was Gen Chas Cabell  Deputy Director of the Central Intelligence Agency (1953?1962). ..fired by Kennedy.
https://en.wikipedia.org/wiki/Charles_P._Cabell

So what did he do for the CIA?

[Steve M. Galbraith]

https://en.wikipedia.org/wiki/Asset_(intelligence)
Cabell owned a chain of minute marts.
His brother was Gen Chas Cabell  Deputy Director of the Central Intelligence Agency (1953?1962). ..fired by Kennedy.
https://en.wikipedia.org/wiki/Charles_P._Cabell

We're not talking about his brother. Where is the evidence he "worked" for the CIA?

The documents linked to say nothing about "working" for the CIA. There's a standard secrecy agreement he signed and a 201 file. Neither show he "worked" for the agency.

[Jerry Freeman]

So what did he do for the CIA?

Why don't you go conduct a s?ance and ask him?