I was flown out to Georgia to interview at their Aeronautics facility. All expenses (hotel, rental car, food) were paid for. Flew out the day before the interview to attend a hiring event the next day. There was a morning and an afternoon batch (I was part of the afternoon one). There were about 10-15 others there all interviewing for different positions, including 1 going for the same one as I was. Total, expect 3-4 others interviewing for the same position that you are. Hiring event consisted of a presentation about the company, facility tour, and one 45-60 minute interview with 3 different managers. Asked me around 15 personality questions to be answered in the STAR format, nothing technical. After the interview, I was told I would hear back in a few days but unfortunately never heard anything until I checked in with the recruiter 2 weeks later.

It was a 1 round interview process. They used general questions, but expected you to connect your past technical experience to the technical parts of the job. Doing background research about the company culture, and job functions is very important.