I was interviewed by 3 different departments. Each dept. sent 5 or 6 people to do a 30-45 min interview. It took 2 days, and was exhausting. Being a new hire, there wasn't anything out of the ordinary or extremely difficult question-wise. Raytheon likes to hire new hires in a "college hire" event. THey will fly out/ask 10-15 people who have recently graduated or just finishing school. This is how I was hired. It was myself and 1 other person who accepted positions through this process, although I'm unsure how many were given offers.