The shadow of an HC-130P Combat King from the 81st Expeditionary Rescue Squadron is seen on the water's surface after the successful drop of three ocean sensors, known as Apex profiling floats, into 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)