Contacted by HR employee. 2 interviews, the first of which was an initial phone interview with same HR rep; the second, a sit-down with two senior managers in the Collections department.
The phone interview was very relaxed, but I was well-prepared with notes in front of me regarding general difficult questions that may have come up, and my strengths as they related to the job description itself (I am sort of a nervous interviewer). I felt like my interviewer was very empathetic and nice about the way she framed her questions; not at all adversarial.
I received a call back two days later and scheduled an in-person interview.
The in-person interview was conducted by two department supervisors, Collections Operations Managers. Much managerial restructuring has taken place since my interview in 2008, but my interviewers were basically three supervisory tiers above me. I believe that number would now be two, as one managerial level has been eliminated recently. But they were department heads.
The meeting was very professional; definitely not a touchy-feely experience. The Red Cross wants to make sure they're hiring someone who takes their work seriously, and is able to follow instructions to the absolute letter, with few deviations, because this kind of adherence to procedure is vitally important to the safe collection of lifesaving blood. So, jokesters take note, I guess.