Maps of Indian and Japanese ports paper the walls of a Dominion Resources Inc conference room in a small Maryland town, population 1,835, known more for crabbing and bird watching than global trade and the U.S. natural gas revolution. Dominion, an American energy company long focused on U.S. markets, hopes to begin an expansion worth billions of dollars at its Cove Point complex on Chesapeake Bay later this year. As part of the plan, compressors fired by a new power plant would cool gas to -260 degrees F (-162 C) until it becomes the hot global commodity known as liquefied natural gas, or LNG. But if environmentalists, including a group that has led the charge against TransCanada Corp's long-delayed Keystone XL oil pipeline, get their way, Dominion won't soon be shipping anything anywhere.