Northrop Grumman Software Engineer III interview questions

Meet with HR briefly. Then meet with process managers for 30 minutes for standard "how do you handle conflict" type of questions. Next, meet with SW Engineers that asked my background and examples to test my skill level. While finishing up with HR, asked me if I could come back after lunch. They paid for lunch and when I returned, talked with project managers that I would be working for. 2.5 Hrs total not including lunch.