BOSTON – Coast Guard Petty Officer 3rd Class Scott McCormick, a port security specialist from Coast Guard Sector Boston, prepares to board a 600-foot tanker vessel less than two miles south of Nahant, Mass., Oct 21, 2007. Other members from Sector Boston and crewmembers from the Coast Guard Cutter Flyingfish also participated in the security boarding. The boarding was part of a four-day maritime domain awareness exercise this week that aimed to enhance homeland security operations in the vicinity of the Port of Boston. (Coast Guard photo/PA3 Connie Terrell)