180901-N-CE622-0102 RIOHACHA, Colombia (Sept. 1, 2018) Lt. Cmdr. Rachel Carter, from Middleburg, Fla., demonstrates how to retract the safety barrier on a scalpel as part of a subject matter expert exchange with Colombian military professionals during Southern Partnership Station 2018. Southern Partnership Station is a U.S. Southern Command-sponsored and U.S. Naval Force Southern Command/U.S. 4th Fleet-conducted annual deployment focused on subject matter expert exchanges and building partner capacity in a variety of disciplines including medicine, construction and dive operations in the Caribbean, Central and South America. (U.S. Navy photo by Mass Communication Specialist 3rd Class Katie Cox/Released)