Pros
Supervisors/managers are incredibly supportive of interns and help make sure they know the background of all of their tasks (i.e. why they have to do them, what they affect, etc) which makes doing some of the paper pushing tolerable. Pay is decent and hours are very flexible for part-time interns.
Cons
Within finance/accounting departments, it seems like there are many employees who have gotten a job because they knew someone within the organization. This makes it hard to see the employees as high-performing and I tend to see them as part of a long chain of favoritism. Also, none of the employees strike me as employees with high aspirations. Most of them seem to be very happy with their jobs and would love to stay in them for many years to come (which is why a large portion of people in Battelle have worked there for 15+ years). These may be pros to some people, but I'd rather have a more competitive environment.