Five years ago, after someone slipped into an underground vault with the purpose of cutting telephone cables, a team of six gunmen opened fire on PG&E Corporate’s Metcalf Transmission Substation in Santa Clara County, California. Within a half hour of entering, they disabled 17 enormous transformers, used to funnel electricity to the populated region of Silicon Valley, which, ultimately, resulted in over $15 million worth of damage. There are more than 55,000 electrical substations in the United States. While some are located mere hundreds of feet from residential and commercial buildings, most are in isolated, rural areas. In order to protect against intrusion, theft and damage of these multimillion-dollar, custom-designed substations, owners must enforce a comprehensive security solution.