The biggest challenge that I faced in my last job was I had to learn about a lot of different kinds of, I think this messed up, let me restart. The biggest challenge that I faced in my last job was that I had to learn about a lot of different kinds of insurances, such as federal employee, some Medicare, and mostly commercial insurances and all their different rules and practices and the way that they do things. And I resolved the problem because I learned everything about it, and now I'm on the senior team and handle escalations.