Attained interview by applying in mulitple locations, then ended up being referred to their Chicago office. The process consisted of a phone interview, then a group meeting, plus a writing and research test. The whole thing lasted a month and a half. Once they sent the offer, I had a less than a week to accept. My advice to everyone interested in this agency is to conduct thorough research on the company and be a good writer. Those who are going to interview potential candidates are actual agency employees; HR will step in to wrap up the details should they want to hire you.