Honduran naval infantrymen with the 1st Marine Infantry Battalion observe their shot groups during a battle sight zero range conducted by a U.S. Marine Corps landing attack and subsequent operations team at the battalion base in Puerto Castilla, Honduras, Sept. 18, 2014, during Southern Partnership Station (SPS) 2014. SPS is an annual deployment of U.S. ships to the U.S. Southern Command's area of responsibility in the Caribbean and Latin America. The exercise involves information sharing with navies, coast guards and civilian services throughout the region.