HONOLULU - A Maritime Safety and Security Team (MSST) Honolulu small boat crew conduct tactical coxswain training, March 12, 2008. MSSTs were created under the Maritime Transportation Security Act of 2002 (MTSA) in direct response to the terrorist attacks on 11 Sept. 2001, and are a part of the United States Department of Homeland Security's layered strategy directed at protecting seaports and waterways. U.S. Coast Guard photo.