SAN FRANCISCO - A Maritime Safety and Security Team (MSST) San Francisco (91105) boat crew conducts operations with a Coast Guard HH-60 Jayhawk helicopter, Oct. 7, 2006. MSSTs were created by the Maritime Transportation Security Act of 2002 (MTSA) in direct response to the terrorist attacks on Sept. 11, 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.