After applying at a school career fair, I was scheduled for an initial interview in-person the same week. I was given a Leetcode Easy (Reverse an Array without using built-in functions) and basically got an overview of what it was like to work at L3Harris.
Afterwards I was contacted by the hiring/manager recruiter to schedule an on-site interview. They flew me out to Palm Bay, Florida and got me a rental car and a hotel (it was all paid for). The on-site interview was a pretty much a whole day affair (3-4 hours with lunch). First I was given a tour of their building with the other candidates. Then we had an information session and then interviews. Started with a behavioral interview with a technical recruiter (30 minutes). Then a mixed behavioral and technical interview (1 hour). Then I had lunch with a software engineer who I could ask questions to. After lunch was a final technical and behavioral interview (1 hour).
They said they would respond with a decision in around a week, but they ended up not responding at all (ghosted).