Douglas C-130 Hercules

    The versatile C-130 was originally designed as an assault transport but was adapted for a variety of missions, including: special operations (low-level and attack), close air support and air interdiction, mid-air space capsule recovery, search and rescue (SAR), aerial refueling of helicopters, weather mapping and reconnaissance, electronic surveillance, fire fighting, aerial spraying, Arctic/Antarctic ice resupply and natural disaster relief missions.  Currently, the Hercules primarily performs the intratheater portion of the tactical airlift mission. This medium-range aircraft is capable of operating from rough, dirt strips and is the prime transport for paratroop and equipment drops into hostile areas.
     A total of 219 were ordered and deliveries began in December 1956.  Five decades have elapsed since the Air Force issued its original design specification, yet the remarkable C-130 Hercules remains in production. The venerable "Herk" is the most successful military transport since the Douglas C-47 and has accumulated over 20 million flight hours. More than 900 C-130s and derivatives have been delivered to the U.S. Air Force during the past 30 years. The aircraft type currently serves in over 60 foreign countries and is expected to remain in production well into the 21st century.  During the Vietnam Conflict, some Air Force C-130As were converted into gunships. In addition to their side-firing 20mm Vulcan cannons and 7.62mm Miniguns, they also possessed sensors, a target acquisition system, and a forward looking infra-red (FLIR) and low-light television system.   
See the display model of the C-130H at