I spoke to HR and the lady was very nice. She first told me a little bit of background about the company and then what kind of work the company is involved in. She then asked for me to talk about my background and what fields I was interested in. Afterwards she asked me some behavioral questions and leadership questions. They weren't too bad and were the straightforward questions every interviewer asks (tell a time when you encountered and overcame an obstacle, or a time where you lead a group to failure and success). After that she laid out the different positions available and told me briefly about each one. Then she told me how the next round would work and what I should expect.