Petty Officer 3rd Class Parker Wood of Coast Guard Marine Safety Unit Chicago explains a Transportation Worker Identification Credential reader to Douglas Judge of the Renewable Energy Group at Chicago Maritime Industry Day in Alsip, Ill., March 13, 2014. More than 200 members of the maritime community throughout the Chicago area attended the event, sponsored by the International Shipmasters Association, to discuss topics and concerns directly concerning mariners. (U.S. Coast Guard photo by Chief Petty Officer Alan Haraf)