U.S. Air Force Master Sgt. Brian McAfee, a 81st Expeditionary Rescue Squadron loadmaster, watches an ocean sensor, known as an Apex profiling float, descend into the Gulf of Aden, Sept. 2, 2013. The float will collect 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)