My suggestion, stay FAR, FAR, ...............FAR AWAY from USAA Mortgage Services!!
I recently purchased a property through USAA Mortgage & it was, by far, the worst experience I've ever encountered! If I wasn't pushing the expiration if the contract, by almost missing the closing date, I would've dropped USAA like a hot lava rock in Hawaii.
There are also at least two threads in the "military" section of this forum on how horrible they are, & how people have discontinued their business with USAA after XX years. I still have my banking & insurance through USAA, but only because I haven't taken the time to transfer my accounts to another bank.
I'd recommend, & plan on doing the same when I purchase an additional property, is to go through your local hometown bank. Yes, they're still bound by the Federal Banking regulations, but it's so much nicer to be able to talk with someone in-person about a question either they or the underwriter's have, versus having to try and explain it to "one of a thousand" call center representatives, who are just trying to make sure you have a "pleasant experience during your phone call today, sir/ma'am".
Just my $0.02. Good luck.
GJ