American Red Cross interview questions

Was contacted by HR after submitting my resume online, they gave me an overview of the position and set up an in person interview. I was under the impression it was with one person, however, I ended up interviewing with 3 different people. 2 hours after my interview ended, I received an email that I was a final candidate and they were starting a background check. I received a voicemail a couple days later (on a Friday), I called right back, but did not get through. No response on Monday either. On Tuesday, they called to officially offer me the position and wanted me to start in less than 2 weeks. Very late notice as I had to move to a new city to accept this position!