Very few people are "in" the CIA - that's why it was such a big deal when Tom Clancy started rattling off specific numbers on 9/11[1]:

>* Judy, we saw people in Northern Ireland -- Catholics -- acting like savages. And Protestants acting like savages. So now we have a few who call themselves Muslims acting like savages. It happens. It's not because of their religion. It's because they are fools... People always ask that kind of question when things go wrong. But you don't ask the question when things don't go right. And the reason is you can't tell when things go right in that business. One of the things that I have been saying for a lot of years is that we need to upgrade the human capability -- the human intelligence capabilities in the CIA and our four-star intelligence community, because you can do a lot with satellites, you can do a lot with eavesdropping techniques, but you can't -- you can't find out what is in a person's mind except by talking to that person. And so the agency needs to increase its human -- its human intelligence capability. The CIA has about 20,000 employees. Less than a thousand of them are actually field intelligence officers.

If you read between the lines, 1000 agents spread across ~206[2] sovereign states. Only ~5 agents per state... even with with some states being much larger and more deserving of attention than others, this means that in some places a single solitary case officer may be responsible for HUMINT[3] for an entire region.

So IMHO, focus less on if Oswald was in the CIA or not, and more on the fact that he was able to take a shot at the president and draw blood.

As for LSD... I've only been offered twice -- the first time, I was on a balcony in a city named after the bad guy from Ghostbusters II -- I told the person I am presenting my Tor paper tomorrow, doesn't that make you stay up all night, and they shoved the blotter paper into my wine glass then had a buddy roofie me at another bar down the road. (Fuck the Belgians. Rude little shits!)

The second time, it was a hotel room at Defcon, and just as I was about to take the hit someone started playing with their Glock, so I decided once again to wait for a better set and setting.

(Showing me the clip and repeatedly racking on the Glock to you had under the couch of one of the cheapest rooms in the Rio to show the chamber is empty doesn't help convince me to drop acid with you, it makes me pretend someone is calling me on the phone I had removed the battery from and powerwalk to the taxi stand... to this day I'm not clear if the "Whiskey Pirates" were off duty cops who did a lot of drugs or just... some very trusting guys who went full Hunter S Goddamn Thompson in front of some guy they hadn't met but once the gun came out I got the fuck out of there.)

Anyways, I think the real place to look is whether Oswald, or other interesting folks, were in military intelligence. I've not seen much written about that -- it seems to be the 2020s equivalent of how nobody wrote much about the NSA up until like, the 80s, and I've met some people who get oddly cagey about not being in the CIA but also wanting to give me a business card in case I ever hear about people wanting to obtain uranium.

(Nobody every asks me for uranium, they just assume I do coke because I "look Italian", which is incredibly racist.)

[1] https://transcripts.cnn.com/show/bn/date/2001-09-11/segment/...
[2] "The state as a person of international law should possess the following qualifications: (a) a permanent population; (b) a defined territory; (c) government; and (d) capacity to enter into relations with the other states." https://treaties.un.org/doc/Publication/UNTS/LON/Volume%2016...
[3] "a category of intelligence derived from information collected and provided by human sources." AAP-6 (2004) - NATO Glossary of terms and definitions