I am from the Seattle area and was hired at Travis AFB in NorCal. I had some contacts in the squadron there (My dad was a C-17 pilot and he had friends from UPT at Travis flying in the reserves) so that got my foot in the door once I asked my dad if he knew anybody flying the KC-10.
To prep for my interview, I found lots of questions from here in the forums, and some from airline interviews, and made a big "interview script" on google docs and just sat for an hour a few nights a week doing some "creative writing" in response to those questions. For the "tell me about yourself question" I got to the point where I knew it so well that I could add pauses and expressions into my response to make it casual and natural - I think it's the one question they expect you to have a sort of canned answer to - but want it to be from the heart. For the other questions I came up with some bullet points/trigger words so that I could make answers come quick depending on how they framed the question and stay on my toes.
I think I ended up making it 6-7 pages long, I definitely over-prepared but it really paid off. If you want to PM me I'm happy to share.
Another tip I have is to practice answering your questions sitting in a chair at a table, in your suit jacket or something. This helped me control my body language and fidget less, and get used to wearing a suit jacket - lots of buttons and pockets to learn to ignore. Even things like how to unbutton/button your suit jacket will make you feel like the guy in Wolf of Wall Street going in to the interview room.
I'm no expert but it worked for me - I got hired at C--5s and KC-10s Friday and Saturday back to back and ended up backing out of a C-17 gig. I know I'll get shit for that - but honestly the KC-10 tugs at my heart a ton and I know that the C-17 will be around for longer than the KC-10 and that opportunity will still be there in the future. I couldn't see myself flying the C-5, the crews on trips are really big and you end up logging lots of "other" time instead of PIC/SIC. KC-10 also goes more places. Plus, it's a DC-10. However, I owe a lot to the C-5 interview for helping me go in the next day confidently - also they are super top notch guys, just not what I saw myself committing to in the end. They stood me and two other interviewees up at the end and hired all three of us on the spot - it was actually really special. Made the decision I had the next few days really tough, but I felt really lucky to get hired two places in one go.