HALO: High Altitude Low Opening Parachute Training 1966 US Army; Fort Gulick, Canal Zone; from Staff Film Report 66-12A (Patreon)

more at http://quickfound.net/

5TH SP - "HALO'' TRAINING

Originally a public domain film from the National Archives, slightly cropped to remove uneven edges, with the aspect ratio corrected, and one-pass brightness-contrast-color correction & mild video noise reduction applied.

The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and/or equalization (the resulting sound, though not perfect, is far less noisy than the original).

https://en.wikipedia.org/wiki/High-altitude_military_parachuting

Wikipedia license: http://creativecommons.org/licenses/by-sa/3.0/

High-altitude military parachuting (or military free fall (MFF)) is a method of delivering military personnel, military equipment, and other military supplies from a transport aircraft at a high altitude via free-fall parachute insertion. Two techniques are used: HALO (high altitude – low opening, often called a HALO jump) and HAHO (high altitude – high opening).

In the HALO technique, the parachutist opens the parachute at a low altitude after free-falling for a period of time, while in the HAHO technique, the parachutist opens the parachute at a high altitude just a few seconds after jumping from the aircraft.

Although HALO techniques were first developed in the 1960s for military uses, in recent years HALO parachute designs have been more widely used in non-military applications, including as a form of skydiving.

In military operations, HALO is also used for delivering equipment, supplies, or personnel, while HAHO is generally used exclusively for personnel. In typical HALO/HAHO insertions the troops jump from altitudes between 15,000 feet (4,600 m) and 35,000 feet (11,000 m)...

High Altitude Low Opening – HALO

The origins of the HALO technique date back to 1960 when the United States Air Force began conducting experiments that followed earlier work by Colonel John Stapp in the late 1940s through early 1950s on survivability for pilots ejecting at high altitude. Stapp, a research biophysicist and medical doctor, used himself in rocket sled tests to study the effects of very high g-forces. Stapp also solved many of the problems of high-altitude flight in his earliest work for the Air Force and subjected himself to exposure to altitudes of up to 45,000 feet (14,000 m). He later helped develop pressure suits and ejection seats, which have been used in jets ever since. As part of the experiments, on August 16, 1960, Colonel Joseph Kittinger performed the first high-altitude jump at 19.5 miles (31.4 km) above the Earth's surface. Kittinger's friend and United States Naval Parachute Test Jumper Joe Crotwell was also among the consultants and test jumpers of the original program. The first time the technique was used for combat was during the Vietnam War in Laos by members of MACV-SOG. SEAL Team Six of the United States Navy expanded the HALO technique to include delivery of boats and other large items.

The technique is used to airdrop supplies, equipment, or personnel at high altitudes, where aircraft can fly above surface-to-air missile (SAM) engagement levels through enemy skies without posing a threat to the transport or load. In the event that anti-aircraft cannons are active near the drop zone, the HALO technique also minimizes the parachutist's exposure to flak.

For military cargo airdrops, the rigged load is cut free and rolls out of the plane as a result of gravity. The load then proceeds to fall under canopy to a designated drop zone.

In a typical HALO exercise, the parachutist will jump from the aircraft, free-fall for a period of time at terminal velocity, and open his or her parachute at an altitude as low as 3,000 feet AGL depending on the mission. The combination of high downward speed, minimal forward airspeed, and the use of only small amounts of metal helps to defeat radar and reduces the amount of time a parachute might be visible to ground observers, enabling a stealthy insertion...