Master-at-Arms 3rd Class Evan Sennett and Master-at-Arms 2nd Class Levi Woodley, both assigned to Maritime Expeditionary Security Squadron (MSRON) 4, stand watch aboard the Military Sealift Command rescue and salvage ship USNS Grapple (T-ARS 53) as they travel through the Panama Canal. MSRON 4, along with Sailors from Mobile Diving and Salvage Unit 2, Company 2-1, is currently participating in Navy Dive-Southern Partnership Station 2012, a multinational partnership engagement designed to increase interoperability and partner nation capacity through diving operations.