Valero Internal Audit interview questions

I applied online to the posted job and was contacted via phone 1-2 weeks later. I then talked with HR to schedule a time that would work for me to come in and interview and meet some folks from the company. The onsite interview consisted of 4 total interviews (both formal and informal). First, I went out to lunch with two managers and talked about the position, the company, and my general responsibilities. Then I was given a tour of the campus in which I casually communicated with two other employees at Valero. Then it was on to another interview with two more employees and finally the last interview of the day included two directors.