MSST
U.S. Coast Guard photo by Petty Officer 3rd Class Melissa Hauck
A USCG Maritime Safety and Security Team (MSST) boat crew patrol San Fransisco Bay in a 25-foot Response Boat Homeland Security craft.
Note the M240b 7.
63mmx51mm belt-fed machine gun mounted at the boat's bow.
MSSTs are a United States Coast Guard Deployable Specialized Force tasked with securing local maritime assets, including detecting and interdicting underwater threats.
MSSTs were established due to concerns over the vulnerability of America's ports to terrorist attack.
