Nathan Free, Natalie Bound

He doesn't have much time, but he knows he can pull this off. It's a simple enough mission. It has lots of steps, and lots of different points of failure, but individually each step is easy, and while the cost of failure is high, the odds of failure is low. The first step is to get into the records office. He already knows which room. Point of approach: window, door, or unconventional? Most unconventional approaches will leave evidence, such as a sawn wall or floor, which will attract attention. He needs to make entry without anyone knowing, even well after the fact, that an entry was made. So, window or door?