The Willis Tower, formerly known as the Sears Tower,is the tallest building in the Western Hemisphere, with 4.5 million square feet (418,063 square meters) of floor space. Roughly 25,000 people pass through the building daily. That’s why building management teams up with the Chicago Fire Department to conduct an annual drill to test and fine-tune emergency-response procedures. NFPA Journal asked Michael Schroeder, director of business continuity and life safety for the company that manages the building, and Anthony VanBuskirk, a retired fire department deputy district chief, to recount their experiences with a recent drill. To see what it takes to make it happen, read the pair's article "Drill Team" in the latest issue of NFPA Journal.