NEW YORK, New York (March. 31, 2003)--A Coast Guard crew from Military Ocean Terminal Bayonne, N.J. scans for vessels to board in the New York Harbor Mar. 31, 2003. The Coast Guard, now part of the Department of Homeland Security, continues to board vessels in ports throughout the U.S. protecting harbors under Operation Liberty Shield from would-be terrorists. Liberty Shield is a unified operation that integrates selected national protective measures with the involvement of federal, state, local and private responders and authorities from around the country.USCG Photo by PA3 Mike Hvozda