@Earl Jefferson
I also recommend multi-family investing using a VA loan. As a matter of fact, I suggest that you search for multi-family properties while you're overseas and prepare to jump on a good deal when you see one. Learn the ins and outs of being a landlord, then explore other real estate investing opportunities while you live in your multi-fam practically for free.
I think this is the best route to take with $30k in your pockets. When I came back from Afghanistan in 2011, I was rolling in the dough. I kept all that money in a bank account, applied for a VA loan through Wells Fargo, and bought a fully renovated foreclosure within about 30 days. The underwriters told my loan officer that he loved my loan packet. With $30k in hand, brother... getting a VA loan for a multi-family should be a snap. Banks like borrowers that have a lot of liquid.
Now, the question is how much do multi-family homes cost in northern California? I did a quick search in your area and saw MFs that were about 1280 sqft selling for $450k... uh, wow. Average rent in that area is about $1600. With a mortgage payment close to $2500, maybe you could swing it. I don't know what your BAH/BAS comes to, but I'm pretty sure it's high for that area, so maybe these numbers are nothing for you. I'm thinking you'll probably stick with a duplex, if you were to invest in a multi-fam. If not, find a really great deal on a 3-4 unit.
I have some other ideas, but I'll leave those off the table... there's a million game plans with that much cash sitting around. At the end of the day, use wisdom. You've made a good choice asking for advice here... smart man.
