I was contacted by an agency who set up the call with Cummins. The agency did no vetting other than reading my resume. They set up a call with Cummins, and then called me one other time to confirm the date and time. Other than that I didn't hear from them again until the process was over.
The process was composed of a single conference call with a handful of participants who asked me various questions about the kinds of projects I've handled and what my management style was like. It was a very "normal" interview with little deviation from the kinds of questions you encounter in every other interview.
I didn't hear anything back again for 3 months; then I was contacted and offered the position.