Initial application was on company website (in 2008, for some reason I could only go back as far as 2009 on here) for trainee program. I received an email within a week inviting me to a hiring session. The session was led by several HR employees, with nearly 100 other applicants in attendance. The first part of the session consisted of the HR reps explaining about the company, the different departments, and the various management paths available through the trainee program. We had to select several paths to be considered for, and then we broke for lunch.
After lunch, during which each table had an HR rep sitting with them, we took a personality/leadership test with over 200 questions. The test took several hours, after which we left. We were told qualified employees would be contacted if you were selected to move ahead in the process.
I received an email inviting me to fly to Norfolk a week or two later. I flew into Norfolk, and stayed at a hotel very close to their HQ. The night before my interview there was a meet and greet session with all the different executives, and every person who was there to be interviewed for a specific department had dinner with one of the executives from that department. Basically just chatted, talked about life, nothing serious.
The next morning I had 3 different individual interviews with various department members. There were at least 2-3 NS team members (HR, department) in the room during the interview. They asked about my experiences, why I was qualified for this job, and if I could handle everything that was expected. They made it clear you were likely to move quite a bit and would have to relocate to Norfolk for 15 months, and then relocate again (that's since been changed). I told them I had an offer from another company and needed to know if I was chosen within 2 days. I got a call 5 hours later when I arrived home that I had been chosen and was emailed an offer letter that week.