U.S. Sailors, Marines and civil service mariners work to store supplies aboard the joint high speed vessel USNS Spearhead at Naval Station Mayport, Fla., May 28, 2014, before the ship departs to participate in Southern Partnership Station 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.