170926-N-YM856-0013 PUERTO BARRIOS, Guatemala (Sept. 26, 2017) Hospital Corpsman 1st Class Kara Irons, assigned to Naval Health Clinic Quantico, reads a pharmacy reference book during a visit to Hospital Nacional Infantil Elisa Martinez as part of a Southern Partnership Station (SPS) 17 medical subject matter expert exchange. SPS-17 is a U.S. Navy deployment executed by U.S. Naval Forces Southern Command/U.S. 4th Fleet, focused on subject matter expert exchanges with partner nation militaries and security forces in Central and South America. (U.S. Navy photo by Mass Communication Specialist 2nd Class Brittney Cannady/Released)