Believe it or not, these are people you're talking with. You might even have a proper conversation with them. You are not on trial. You desperately want a job. Try to get into a zone where you're just sharing ideas with equals. You might even learn something for your work. Take that attitude into the room. These guys may be your colleagues for the next thirty years. They are checking you out, to see if you're an okay human being, mostly. Stay human. In our job the temptation to become a samurai battling all and sundry is overwhelming. Drop that.