\indent Are you curious as to the kind of work that is done at a national laboratory? Have you heard of the field of operations research, or are you interested in learning about it and how it is applied to real problems? In this talk I will describe the kinds of math I use in my job at Lawrence Livermore National Laboratory, as well as giving an introduction to the discipline of operations research. The talk will focus on three projects I have worked on: disaster preparedness, modeling an intelligent adversary, and downsizing the US nuclear weapons stockpile. These projects span a range of time frames, sponsors, and team sizes, and hopefully will give a flavor of the diverse work that is done at a national laboratory. This talk is intended for undergraduates or anyone interested in applications of math in the real world.