GPES meaning in General ?

Ground Parachute Extraction System (GPES) refers to a method by which ground forces are resupplied by low altitude air drops. It has also been referred to as Ground Proximity Extraction System.The system, developed jointly by the United States Air Force and Army, is similar to the arrester technique used on aircraft carriers. The cargo aircraft flies low over the delivery area. A hook is attached to the pallet load. Another hook at the other end of the cable line is attached to the rear cargo door. When the plane nears the delivery site, the hook at the cargo door snags an arrester wire that is placed perpendicular to the plane's flight path thereby yanking the pallet load out of the aircraft to the intended delivery site.