At this point, many energy investors know that Cheniere Energy (NYSEMKT:LNG) is poised to become the first U.S. company to export liquefied natural gas, or LNG, in significant quantities. Investing in energy exports is a smart move; however, LNG exports won't become a reality until 2015, while the U.S. is already a net exporter of petroleum products. In this video, Fool.com contributor Aimee Duffy explains why investors should focus on companies that are already making money in the export game, including one company that is behind a whopping 25% of America's energy exports, and two other companies that are flying under the radar.