An ocean sensor, known as an Apex profiling float, descends from an HC-130P Combat King from the 81st Expeditionary Rescue Squadron into the Gulf of Aden, Sept. 2, 2013. The float has a four day cycle and collects data on subsurface currents, temperatures, acoustics and salinity which provide underwater forecasts. These forecasts help any potential search and rescue efforts by CJTF-HOA forces. (U.S. Air Force photo by Staff Sgt. Julianne M. Showalter/Released)