In the wake of September 11, 2001, the Transportation Security Agency was given the responsibility for ensuring that all baggage flying on U.S. aircraft would be screened. Left undefined was how much equipment should be deployed to scan all baggage thoroughly while not unnecessarily inconveniencing the public. This documented briefing seeks to answer the question, “how much is enough?” by minimizing costs to the public for different Electronic Detection System deployment sizes. The authors also discuss the pros and cons of profiling and how it might reduce these costs.