The municipality of Houston comes fourth in rank in largeness in the United States, coming in behind New York, Los Angeles, and Chicago. Adding to that, most of the Fortune 500 energy companies are headquartered here, placing Houston in a highly advantageous position when it comes to energy. Marcus Hiles has been focusing on this ever-growing Houston. A great deal of Houston’s progressive growth has been driven by the energy business. The expansion of the Panama Canal also offers massive significance to the city, where industrial giants attempt to beat West Coast in attaining foreign goods. The Port of Houston is the second busiest port in the United States, coming in close competition with the Port of Los Angeles for trade, jobs and business. The Texas Medical Center, situated just three miles south of downtown, has over 100,000 representatives and includes facilities such as hospitals, research organizations, pharmacy schools, nursing programs and a dental school.