I'm planning to look up advice on how to make an 'elevator pitch,' and then think about pitches for why I have each attribute that makes a good vet - compassion, communication skills, critical thinking, quick thinking, etc. etc. etc.
Then, I'm going to think about responses for all the news stories I find in the AVMA SmartBriefs I get from now to the interview - a lot of them have moral questions in them and such. I'm also going to look over all the promotional info Davis has on the website and think about how I relate to all of the selling points they bring up and such.
I'll probably ask friends/family to give me little mock interviews, too, just to get comfortable. If I'm really freaking out, I might ask some of my improv comedy/improv theatre friends to do improv games with me. I figure that the most important thing for the interview is appearing comfortable and being able to just go with whatever question they throw at us.