Congrats,
I went through the process for Amtrak, interview is basic. They go over a few things in your background & then ask some what ifs. Also they ask about your views on working with others (code for other ethnicities) and taking orders, understanding your role as a police officer, lots of questions about where you see your self in a 2,5,10 years. They have a ton of turnover. Also, they will tell you your assignment will be Boston/New Haven, but can assign you anywhere in the US under departmental needs. That is why I turned them down. Good luck, and I hope all works out.
ogzee28