Dropsonde
MACDILL AIR FORCE BASE, Fla. -- This dropsonde is one of the key tools National Oceanic Atmospheric Administration officials use to measure temperature, humidity, and most importantly, barometric pressure inside a hurricane. The crew of the WP-3D Orion, can drop as many as 60 dropsondes during a flight from here. (U.S. Air Force photo by Staff Sgt. Randy Redman)