Does anyone know...

Guns dont solve anything.

Armenian Survival, Google "boot camp" or "combat training" and then "California". Let me know if you come up with anything. Noble thoughts indeed, i've been thinking about re-joining the National Guard at age 40, though Iraq is not quite my cup of tea...

A) martial arts, certainly. I suggest aikido, but I admit to some bias, since I take it.
B)As people have said, there are plenty of self-defense groups.
C)join a weird paranoid militia group. Maybe you can find one that isn't weird,. paranoid, and unprofessional, in which case that would be ideal.

D) the funny solution. Move down to mexico, get citizenship. All mexican males, once they reach eighteen, are expected to report in and be given some basic military training, although they aren't deployed unless they choose the army as their career voluntarily. In previous years, they didn't do a lot of actual firearms and self-defense training, but that has changed.

...Then, emigrate back to the us. I make it sound so simple...;)

Aikido definitely doesn't have the most immediately effective techniques, but I think part of it is that, even more so than many other martial arts, the physical techniques are just a framework. You use them to illustrate a point, and learn spatial relationships and awareness. No one TEACHES the "street" side. Just how it seems to me, But one of the final, unofficial tests seems to be realizing how to just sort of do whatever works and not worry about techniques. I've been practicing for maybe 9 years now, and I feel like what I have to do to understand the more immediately effective side of it is to-in a way-figure it out for myself, and not limit myself. Just a feeling, but whatever.

I would agree that most fights end up on the ground, and ground grappling is the specialty of jujitsu-especially brazilian jujitsu, or so I've heard-But it's great to get some more traditional "punchy" martial arts training as well. I would suggest wing chun kung fu, as it relies on short, efficient, simple movements.

I suggested Aikido because it gives a great framework to hang other bits and pieces on-you learn to be calm, aware, and centered, and then you can sort of mix and match the techniques you do, which are more effective because you learned the mindset first.