Southwest Airlines Auditor II interview questions

I applied online and was contacted by someone from HR for a 30 minute phone interview which consisted of traditional interview questions. Afterwards I was invited to Southwest's headquarters in Dallas for a group interview with four people (a senior manager and 2 project managers from the department for which I was interviewing and the same HR representative who had interviewed me over the phone). Everyone in the group asked me a few questions ranging from traditional ("Why Southwest?") to behavioral ("Tell me about a time when..."). Everyone was extremely friendly and polite throughout the whole process. About a week after my group interview I received an offer pending my passing a background check and drug test.