Coast Guard Petty Officer 2nd Class Sal Hernandez, a member of Maritime Safety and Security Team 91103, ensures proper function of a sphygmomanometer before an M-16 rifle qualification course, Dec. 14, 2009. Hernandez served as the range emergency medical technician to provide medical assistance in the event of emergency. MSST 91103 is deployed here to perform maritime anti-terrorism and force protection duties for Joint Task Force Guantanamo.