Friend discussion at first. Ask a lot of STAR type questions. Be ready for behavior (what if) situations. The Engineer asking me was understanding but the Manager was more challenging.

Initial screening interviews were conducted on my university campus with a couple of recruiters. Then, I was asked to prepare a presentation to deliver onsite. I was flown out to the Houston HQ for a day where I gave the presentation to a small group, got a tour, had lunch, and was taken back to the airport.