Caterpillar Inventory Analyst interview questions

Initial interview was conducted on college campus (30 minutes). I passed that process and was invited in-house to interview. The in-house process was 3 separate 1 hour interviews with 3 different interviewers. I had not been gone from the Caterpillar office but 1 hour, when I got a phone call from the recruiter with a verbal offer. The written offer showed up in my inbox the next day.