Hey birdeater,

good luck.... The only tip I can give you is this. You're qualified, otherwise you would not have been called to the interview. Be honest, straight forward and most of all, be yourself. Your interviewer is just trying to figure out if he would want to be on a four day rotation with you. Perhaps that's a little over simplified, but it's not far off the mark.

Hope to see you on the line soon.

Tomcat